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Ye Olde Towne Crier (News) (Read 104694 times)
abyssoft
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Ye Olde Towne Crier (News)
06/08/06 at 21:02:56
 
Just a little topic chain that we can post neat news worthy items related to gravity, astronomic structures and planetary sciences.
 
and since I'm starting this thread up I'll post the first 1's.
 
Physicists probe the fifth dimension
Can we prove realms exist beyond our plane ... or ‘brane’?
http://www.msnbc.msn.com/id/13070896/
 
Star's Planets Might Have Mountains of Diamonds  
http://space.com/scienceastronomy/060607_carbon_excess.html
 
Maturity of Farthest Galaxy Cluster Surprises Astronomers  
http://space.com/scienceastronomy/060608_galaxy_cluster.html
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« Last Edit: 08/16/06 at 18:41:13 by abyssoft »  
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Re: Ye Olde Towne Crier
Reply #1 - 06/09/06 at 07:25:06
 
Galaxy cluster’s maturity surprises scientists  
Pictures show young universe 'full of old galaxies'
http://www.msnbc.msn.com/id/13208024/
 
Definition of 'Planet' Expected in September  
http://space.com/scienceastronomy/060608_planet_definition.html
 
Exploring Mars: Wind-Eroded Sediments in Eastern Meridiani  
http://space.com/scienceastronomy/060608_themis_meridiani.html
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Re: Ye Olde Towne Crier
Reply #2 - 06/09/06 at 18:16:49
 
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Re: Ye Olde Towne Crier
Reply #3 - 06/11/06 at 06:39:39
 
Corkscrewing asteroid leaves Earth behind
Orbital oddity gets a push into deep space from our planet
http://www.msnbc.msn.com/id/13251064/
 
Norway Possibly Struck by Large Meteorite
http://www.livescience.com/blogs/2006/06/09/norway-possibly-struck-by-large-mete orite/
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Re: Ye Olde Towne Crier
Reply #4 - 06/11/06 at 09:34:47
 
Neat article about the corkscrew asteroid  Wink.  All your links are neat, and posting them here is a good way to keep a catalog of interesting links.
 
As the article says, this asteroid is similar to 2002 AA29.  There is a Gravity Simulator simulation on 2002 AA29.  I forget if its part of the install package, but it is on the website's Simulations page.  I'll make another simulation of the asteroid described in the article and post it here.
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Re: Ye Olde Towne Crier
Reply #5 - 06/12/06 at 05:10:20
 
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Re: Ye Olde Towne Crier
Reply #6 - 06/12/06 at 18:20:31
 
Gas Blob Resembles Gigantic Comet  
http://space.com/scienceastronomy/060612_gas_comet.html
 
VIDEO: Black Hole Diving
The Universe's most fascinating and extreme sport.
http://www.space.com/php/video/player.php?video_id=b020335_sp_simhole
 
8 Worlds Where Life Might Exist  
http://www.space.com/searchforlife/060323_seti_biomes.html
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Re: Ye Olde Towne Crier
Reply #7 - 06/13/06 at 11:21:21
 
***A little off Topic but cool none the less***
Hawking says humans must go into space
Predicts increased risk of disaster that will destroy our planet
http://www.msnbc.msn.com/id/13293390/
 
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Re: Ye Olde Towne Crier
Reply #8 - 06/13/06 at 17:21:50
 
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Re: Ye Olde Towne Crier
Reply #9 - 06/14/06 at 09:54:49
 
Supercomputer Takes on a Cosmic Threat  
*** or How to deflect/disintegrate an asteroid ***
http://www.space.com/businesstechnology/060614_asteroid_computer.html
 
Nearest Galaxy Ripped from Another, Study Suggests  
http://www.space.com/scienceastronomy/astronomy/sgr_galaxy_020227.html
 
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Re: Ye Olde Towne Crier
Reply #10 - 06/14/06 at 20:50:08
 
***space and time are inseperable so lets look at the language of time***
Backs to the Future
Aymara Language and Gesture Point to Mirror-Image View of Time  
http://ucsdnews.ucsd.edu/newsrel/soc/backsfuture06.asp
 
THE MILKY WAY'S LITTLE SISTER  
http://cosmiclog.msnbc.msn.com/archive/2006/06/14/396.aspx
 
***older links but still good reads***
The Legend of Gravity Hollow  
http://blog.sciam.com/index.php?title=the_legend_of_gravity_hollow&more=1&am p;c=1&tb=1&pb=1
 
Ultraviolet Stripping Creates Super Earth Sized Planets
http://www.spacedaily.com/reports/Ultraviolet_Stripping_Creates_Super_Earth_Size d_Planets.html
 
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Re: Ye Olde Towne Crier
Reply #11 - 06/15/06 at 17:23:34
 
Neptune's trojan asteroids
http://www.dtm.ciw.edu/sheppard/trojans/
 
Here's a simulation for Gravity Simulator of Neptune's trojans.  Starting conditions are courtesy of JPL.
http://orbitsimulator.com/gravity/simulations/NeptuneTrojans.gsim
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« Last Edit: 06/16/06 at 17:31:42 by Tony »  
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Re: Ye Olde Towne Crier
Reply #12 - 06/21/06 at 10:13:47
 
Earth Surrounded by Giant Fizzy Bubbles  
http://space.com/scienceastronomy/060620_space_bubbles.html
 
Recovered Gabbros Could Hold Inner Earth's Secrets
http://www.livescience.com/environment/060617_ap_ocean_crust.html
 
Explosive Debate: Supernova Dust Lost and Found  
http://www.space.com/scienceastronomy/060619_mystery_monday.html
 
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Re: Ye Olde Towne Crier
Reply #13 - 06/21/06 at 19:57:43
 
Pluto’s new moons named Hydra and Nix
Tiny satellites get sobriquets that evoke underworld and New Horizons
http://space.com/scienceastronomy/060621_nix_hydra.html
 
Magnetic Fields Nudge Matter Into Black Holes  
http://www.space.com/scienceastronomy/060621_bhole_magnetic.html
 
New Cosmic Defense Idea: Fight Asteroids with Asteroids  
http://www.space.com/scienceastronomy/060620_science_tuesday.html
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Re: Ye Olde Towne Crier
Reply #14 - 06/24/06 at 23:45:51
 
Not really news per se, but it is a nice impact simulation...
 
http://www.youtube.com/watch?v=3JHdYBet_4Q&eurl=http://www.sosyalmekan.com/b log/index.php
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Re: Ye Olde Towne Crier
Reply #15 - 06/25/06 at 00:39:58
 
Quote from abyssoft   on 06/24/06 at 23:45:51:
Not really news per se, but it is a nice impact simulation...

Very cool!  Thanks for that.
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Re: Ye Olde Towne Crier
Reply #16 - 06/30/06 at 10:20:39
 
NASA aims for quick Hubble fix
Balky camera could be back on line July 3, agency says
http://www.msnbc.msn.com/id/13587692/
 
Other then that all space/planetary news is rather quiet.
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Reply #17 - 06/30/06 at 18:10:03
 
Yeah we have news...
 
New way to find life on Mars?
'Desert varnish' suggests new method to search for signs of life on Mars
http://www.msnbc.msn.com/id/13637872/
 
Hubble camera put on backup power
Switchover should clear up voltage problems, officials say
http://www.msnbc.msn.com/id/13637523/
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Re: Ye Olde Towne Crier
Reply #18 - 07/04/06 at 18:25:17
 
Yet another lull in planetary and gravity sciences as for news worthy items
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Re: Ye Olde Towne Crier
Reply #19 - 07/05/06 at 10:52:16
 
Extrasolar planetary sciences news woot!  Hopefully the news drought is over...
 
New Technique Could Image Oceans on Faraway Planets  
http://space.com/scienceastronomy/060705_space_shield.html
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Reply #20 - 07/11/06 at 11:55:56
 
??? Shocked ???
Scientists question nature's fundamental laws
Laws such as the speed of light may have been different in the past
http://www.msnbc.msn.com/id/13816702/
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Re: Ye Olde Towne Crier
Reply #21 - 07/16/06 at 10:12:22
 
And we have another lull in news related to planetary and gravatic sciences.  embarrassed
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Re: Ye Olde Towne Crier
Reply #22 - 07/18/06 at 20:12:02
 
Smiley Wink Shocked Roll Eyes  !!! Wahoo finally some news !!!
 
The First Star: Things Heated Up Quickly, Scientists Say  
 
http://space.com/scienceastronomy/060717_mm_first_star.html
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Re: Ye Olde Towne Crier
Reply #23 - 07/19/06 at 17:25:11
 
this one's abit old but it's a good read
 
Going Nova: New Surprises From an Ancient Star  
http://www.space.com/scienceastronomy/astronomy/nova_burst_010910.html
 
here's something a little newer
Planets Found in Potentially Habitable Setup  
http://www.space.com/scienceastronomy/060517_netpune_planets.html
 
and something current
 
Mystery of Explosive Star Solved  
http://space.com/scienceastronomy/060719_ophiuchi_nova.html
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Re: Ye Olde Towne Crier
Reply #24 - 07/24/06 at 20:51:55
 
It's not much but at least we've got a little news
 
Why Fast-Spinning Young Stars Don't Fly Apart  
 
http://space.com/scienceastronomy/060724_star_spin.html
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Re: Ye Olde Towne Crier
Reply #25 - 07/26/06 at 07:12:51
 
Astronomers discover five new planets
 
http://planetquest.jpl.nasa.gov/index.cfm
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Re: Ye Olde Towne Crier
Reply #26 - 07/27/06 at 12:17:52
 
Yeah a triple feature  8)
 
Starting with a video and following up with 2 new articles.
 
Video from space.com
Blackholes beat the clock
http://www.space.com/php/video/player.php?video_id=b000829_sp_timewarp
 
Newfound Blob is Biggest Thing in the Universe
http://space.com/includes/iab.html?url=/scienceastronomy/060727_largest_object.h tml
 
Hot New Idea: How Dead Stars Go Cold  
http://space.com/scienceastronomy/060727_dead_stars.html
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Reply #27 - 07/29/06 at 21:32:47
 
All members are invited to contribute to this thread.
 
Know of some news we don't please share with us.
 
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Re: Ye Olde Towne Crier
Reply #28 - 07/31/06 at 17:16:52
 
Looks like we have some goodies today
 
Studies Find the Toxic Side of Martian Dust Storms
http://www.space.com/scienceastronomy/060731_mars_duststorms.html
 
Multi-Nation Moon Collaboration Backed
http://www.space.com/news/060731_moon_plans.html
 
Apparent Concentrations of Galaxies Puzzles Astronomers
http://www.space.com/scienceastronomy/060731_cosmic_mystery.html
 
Orbital Debris a Growing Problem with No End in Sight
http://www.space.com/spacenews/060731_businessmonday.html
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Re: Ye Olde Towne Crier
Reply #29 - 08/01/06 at 11:23:54
 
Grin We can hope on this one might give us a place to look.
Habitable Planet Possible Around Nearby Star System  
http://www.space.com/scienceastronomy/060801_science_tuesday.html
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Reply #30 - 08/03/06 at 14:54:15
 
Tales of the wierd, wacked, and warped
 
Oddball Objects: Neither Stars or Planets
http://www.space.com/scienceastronomy/060803_planemo_twins.html
Object Survives Being Swallowed by a Star
http://www.space.com/scienceastronomy/060802_swallow_dwarf.html
Moon's Strange Bulge Finally Explained
http://www.space.com/scienceastronomy/060803_moon_shape.html
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Re: Ye Olde Towne Crier (News)
Reply #31 - 08/06/06 at 07:26:58
 
Looks like another news drought, let's hope it's not as bad as the water drought the central midwest is having  Tongue
 
If anyone can dig up old/new news please post away  8)
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Re: Ye Olde Towne Crier (News)
Reply #32 - 08/07/06 at 03:28:34
 
Universe Might be Bigger and Older than Expected  
 
http://www.space.com/scienceastronomy/060807_mm_huble_revise.html
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Re: Ye Olde Towne Crier (News)
Reply #33 - 08/12/06 at 22:53:40
 
Planet Definition
http://www.astronomy2006.com/planet-definition.php
 
Keep Your Eyes open a definition is coming soon... We know that the final definition will be released between now and the end of September.  The final drafts to go before the GA IAU will be determined from the Tuesday, August 22, 12:45 - 13:45 Plenary Discussion in the Congress Hall.
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Re: Ye Olde Towne Crier (News)
Reply #34 - 08/15/06 at 16:08:39
 
Wootness more news of space and time....
 
Planets, and moons, and stars oh my....
 
Moons (not gravity related this time)-
NASA's New Moon Project Gets a Logo  
http://www.space.com/news/cs_060814_orion_logo.html
 
Planets-
Astronomer Calls for Unity on Planet Definition  
http://www.space.com/scienceastronomy/ap_060815_planet_unity.html
 
Discovery Hints at a Quadrillion Space Rocks Beyond Neptune
http://www.space.com/scienceastronomy/060814_tno_found.html
 
Stars-
Star Warp: Long-Sought Shapely Space Figure Found  
http://www.space.com/scienceastronomy/060814_mystery_monday.html
 
And for some more good news....  
On days with little astronomy/astrophysics news activity I will try to post at least a nice animation/movie link related to the subject each day.

Also I am starting up 2 Threads,  
1 for voting on ....
1 for discussion ....
 
What is a Planet?
 
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Re: Ye Olde Towne Crier (News)
Reply #35 - 08/16/06 at 02:24:42
 
Roll Eyes  ??? First formal proposed definition of planet put forth at IAU GA  ???  Roll Eyes
 
Read more here  
Nine Planets Become 12 with Controversial New Definition
http://www.space.com/scienceastronomy/060816_planet_definition.html
and don't let that stop us from having fun on the vote and debate threads on the subject.
 
Additional info on the proposal....
 
Q&A on the Proposal  
http://www.space.com/scienceastronomy/060816_planet_qanda.html
 
Image Gallery: The 12 "Planets"
http://www.space.com/php/multimedia/imagegallery/igviewer.php?imgid=4162&gid =298
 
Read the Draft Resolution  
http://www.space.com/scienceastronomy/060816_planet_resolution.html
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Re: Ye Olde Towne Crier (News)
Reply #36 - 08/17/06 at 19:50:29
 
Earth's Moon Could Become a Planet  
http://www.space.com/scienceastronomy/060817_moon_planet.html
 
S E T I Related  
Contact: What Happens if a Signal is Found  
http://www.space.com/searchforlife/seti_whatif_060817.html
 
And yes I'm playing with some of the features  Tongue
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Re: Ye Olde Towne Crier (News)
Reply #37 - 08/18/06 at 00:35:41
 
From your first article:
Quote:
Other astronomers have noted that it is possible there are three-object systems yet to be found in the outer solar system. If they are all round and have that certain barycenter thing happening, then they'd be called triple planets under the new definition.

I could get a little stranger than that.  You could have a triple system where the smallest planet by itself is not strong enough to pull the barycenter above the surface of the primary.  But the 2nd largest planet in the system is.  So the smallest becomes a planet by default.
 
This would be the case in the Pluto system if either Hydra or Nix were large enough to collapse into a sphere.
 
There's a new Plutosystem animation on the Pluto page showing this scenerio:
http://www.orbitsimulator.com/gravity/articles/plutosystem.html
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Reply #38 - 08/19/06 at 07:04:12
 
Not major News but the images rock....
 
Orion's Inner Beauty
http://www.spitzer.caltech.edu/Media/releases/ssc2006-16/ssc2006-16a.shtml

 
I'd have used the high res one here but it might crash some peeps systems if the can handle the memory requirements for it, approx. 60MB.
High qualty/res image
http://ipac.jpl.nasa.gov/media_images/ssc2006-16a1.jpg (3220x6000)
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Reply #39 - 08/19/06 at 07:55:03
 
Black Hole Spills Kaleidoscope of Color
http://www.spitzer.caltech.edu/Media/happenings/20060724/
 
Ring Nebula
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Reply #40 - 08/19/06 at 08:22:31
 
and now for a little humor...
some may find this a little offensive please take it for what it is.
 
The Galaxy Song (Monty Python) Modern Remix
http://video.google.com/videoplay?docid=-5621226325041057058&q=galaxy&hl =en
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Re: Ye Olde Towne Crier (News)
Reply #41 - 08/20/06 at 07:35:02
 
since new on the planet debate issue will probably be scare I figured I could scramble something video related up.
 
Gravity Concepts (1hr 10min) [quality is ok, material is great for beginners, and for recapping]  Tongue
http://video.google.com/videoplay?docid=-5979449558691390802&q=gravity&h l=en
 
Black Holes.... (29 min)  Shocked
http://video.google.com/videoplay?docid=3195557628195650694&q=blackholes& ;hl=en
 
Silly Putty ???
http://video.google.com/videoplay?docid=-1402933914980153487&q=physics&h l=en
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Re: Ye Olde Towne Crier (News)
Reply #42 - 08/21/06 at 17:35:03
 
Colossal Cosmic Collision Reveals Mysterious Dark Matter  
http://space.com/scienceastronomy/060821_dark_matter.html
 
Missing Gas Found in Milky Way  
http://space.com/scienceastronomy/060821_mystery_monday.html
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Re: Ye Olde Towne Crier (News)
Reply #43 - 08/23/06 at 19:47:08
 
Mystery Surrounds Thursday's Vote on Pluto's Fate  
 
http://space.com/scienceastronomy/060823_planet_vote.html
 
(also Cross posted in the Planet Discussion thread)
 
See The latest "DISSERTATIO CVM NVNCIO SIDEREO III" for more news on the planet issue or just read the article in the Planet definition discussion thread.
http://astro.cas.cz/nuncius/nsiii_09.pdf
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Re: Ye Olde Towne Crier (News)
Reply #44 - 08/24/06 at 05:39:32
 
Three New Planets with the Stroke of a Pen? Great News for Science Teachers  
http://www.space.com/searchforlife/060824_seti_12planets.html
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Re: Ye Olde Towne Crier (News)
Reply #45 - 08/24/06 at 08:21:31
 
BREAKING NEWS: Pluto Demoted, No Longer a Planet  
http://www.space.com/scienceastronomy/060824_planet_definition.html
 
Crossposted in Planet Definition discussion
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Re: Ye Olde Towne Crier (News)
Reply #46 - 08/24/06 at 15:19:30
 
Astronaut to drive golf ball from ISS
Although this article is from March, 2006, there must be a new twist to it as this story was featured on CBS radio's top of the hour news yesterday.
 
http://www.newscientistspace.com/article.ns?id=dn8791
 
Although it doesn't mention what direction he will hit the ball, retrograde makes the most sense as its orbit will decay the fastest.
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Re: Ye Olde Towne Crier (News)
Reply #47 - 08/30/06 at 10:53:39
 
Strange Exploding Star Unlocks Supernova Secrets  
http://space.com/scienceastronomy/060830_grb_supernova.html
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Reply #48 - 09/04/06 at 08:16:32
 
(Taken from a post on Google Group Planetquest)
 
Look, up in the sky - it's another solar system!
 
PLANETQUEST) -- If you've ever looked up on a clear winter night, you've probably seen it: Pollux, also known as Beta Geminorum, one of the brightest and most familiar stars in the night sky. And now, scientists have discovered that it harbors a secret: a hidden planet, about three times the size of Jupiter.  
 
The discovery of the new planet, dubbed Beta Genorium b, was announced recently by two separate planet-finding teams, one led by Sabine Reffert and the other by Artie Hatzes, both of Germany. Both teams found the planet using the Doppler (or radial velocity) method, which infers the existence of a planetary companion from its gravitational tug on the host star. The new planetary system is located about 34 light-years away in the constellation Gemini.  
 
http://planetquest1.jpl.nasa.gov/atlas/atlas_skymap.cfm?Star=153  
 
In other planet-discovery news, astronomers have announced the discovery of a fourth planet orbiting the star Mu Arae (a.k.a. HD 160691), located in the constellation Ara. The planet is about half the mass of Jupiter and orbits the star at a distance similar to the distance at which the Earth orbits the sun. Mu Arae is the second extrasolar system known to host four planets.  
 
http://planetquest1.jpl.nasa.gov/atlas/atlas_skymap.cfm?Star=128  
 
The recent discoveries bring the total number of known extrasolar planets around normal, sun-like stars to 193.  
 
http://planetquest.jpl.nasa.gov/Planet_Finder/planetfinder.html  
 
*my own info*
Mu Arae is only 41 Lyr away.  With current technology it is potential possible for us to send a probe to this stellar system taking approx. 200 Yrs to reach it.  and another 41 Yrs before recieving data from it.
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Reply #49 - 09/05/06 at 11:36:22
 
Strange Space Pinwheels Spotted  
http://space.com/scienceastronomy/060904_mystery_monday.html
 
Clyde Tombaugh's Family Joins Protest of Pluto's Downgrade  
http://space.com/news/060905_pluto_protest.html
 
Huge Black Holes Stifle Star Formation  
http://space.com/scienceastronomy/060905_science_tuesday.html
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Reply #50 - 09/07/06 at 03:58:29
 
Planetary Politics: Protecting Pluto  
http://www.space.com/searchforlife/060907_pluto_politics.html
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Reply #51 - 09/07/06 at 11:17:19
 
Grin Roll Eyes Cheesy Shocked Roll Eyes ???
 
Newfound Object Further Blurs Planet Definition  
http://space.com/scienceastronomy/060907_chrx73b.html
 
Yeah more controversy
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Reply #52 - 09/12/06 at 10:13:35
 
Angry embarrassed cry
 
Pluto is Now Just a Number: 134340  
http://space.com/scienceastronomy/060911_pluto_asteroidnumber.html
 
 ??? Shocked Grin
Water Worlds: Astronomer Predicts Many Earth-Like Planets
http://space.com/scienceastronomy/060912_earthling_planets.html
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Reply #53 - 09/20/06 at 20:01:01
 
Sorry about the lack of vids and gravity related news
 
I at least have 1 small tidbit for ya today
 
Probe spots a new ring around Saturn
Faint trail of particles is fed by debris from two moons, scientists say
http://www.msnbc.msn.com/id/14915122/
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Reply #54 - 09/21/06 at 20:41:26
 
Hubble Spots 500 Galaxies in Early Universe  
http://www.space.com/scienceastronomy/060921_young_galaxies.html
 
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Reply #55 - 09/25/06 at 20:25:40
 

Fast-Spinning Star on Verge of Breaking Apart  
 
http://www.space.com/scienceastronomy/060925_mm_star_spin.html
 
News in our fun field is rather scarce at the moment sorry all
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Reply #56 - 09/28/06 at 03:24:39
 
Due to udder,  Grin , lack of news here's something that is at least a little interesting.
 
Time for Europa  
http://www.space.com/searchforlife/seti_europa_060928.html
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Reply #57 - 10/12/06 at 14:18:29
 
YEAH!!! Grin We finally have worthy news
 
Large Galaxy Caught in the Making  
http://space.com/scienceastronomy/061012_spiderweb_galaxy.html
 
Distant Planet is Half Fire, Half Ice  
 
http://space.com/scienceastronomy/061012_fireice_planet.html
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Reply #58 - 10/16/06 at 08:11:21
 
This ones a little interesting
 
Dancing Asteroid Mapped in Motion  
 
http://www.space.com/scienceastronomy/061016_mm_binary_asteroid.html
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Reply #59 - 10/23/06 at 21:54:33
 
9:53 pm BBS Time
 
Record 4 registered users logged in at the same time
 
 Shocked Shocked Shocked Shocked Shocked Shocked
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Reply #60 - 11/18/06 at 09:44:14
 
Just a quick warm fuzzy for those of us here...
 
If you enter the following
 
gravity simulator
 
and choose "I'm feeling lucky" on google you come here Cool
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Reply #61 - 11/30/06 at 17:20:25
 
"New paradigm" for stable circumlunar orbits:
 
http://science.nasa.gov/headlines/y2006/30nov_highorbit.htm?list14592
 
I think this has something to do with Kozai, that critical angle of 39.6° that they mention in the appendix looks awfully familiar...
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Reply #62 - 11/30/06 at 18:46:13
 
I bet I know what simulation is running on your computer now  Grin
 
Even in the linked paper, he does not mention the Kozai Mechanism as the cause.  But his description of why these orbits are unstable describes the Kozai Mechanism quite nicely.  I'd be mad if I were Professor Kozai. Angry
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Reply #63 - 12/15/06 at 10:09:59
 
you know...  I just read this article online...  well.. I shoudl say I sketched through it.  The graphic for it reminded me of Gravity Simulator.
 
I'm sure NASA has their own stuff, but hey...  Smiley
 
http://www.universetoday.com/2006/12/14/tag-an-asteroid-win-a-prize/
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Reply #64 - 01/10/07 at 10:12:46
 
Dying Star Builds Planets  
 
http://www.space.com/scienceastronomy/070110_mira_disk.html
 
Now if only I can figure a way to simulate this ....
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Reply #65 - 01/11/07 at 09:25:29
 
Nice evalution ...
Indeed hard to simulate..must be a mix between fluid mechanics and gravitation .
A couple of days ago I wondered how it is possible to simulate dark matter and the motion of planets in such a field . Suppose the solar system is filled with dark matter fi. the mass of 10 jupiters , but homogeneous . How would the planets behave , or do they already behave in such a way ?
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Reply #66 - 01/30/07 at 12:03:21
 
Trojans at Neptune,  
(The Greeks are in for it now lol....)
 
http://www.space.com/scienceastronomy/070130_st_neptune_trojans.html
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Reply #67 - 01/31/07 at 10:13:57
 
Asteroids missing us  or hitting us ...., when ...?  
 
There are some beautiful sites on the net like the NEAR site of Nasa/JPL showing the orbits of the known asteroids .  
Some of them allow the generate the ephemerides , which can be used in GravSim .  
In search of a table of forecasted "close approaches" i found among others this site...  
 
http://cfa-www.harvard.edu/iau/lists/CloseApp.html  
 
This site seems to be updated daily ...  
In the next 2 years it is known that +/- 314 of them will come close within 0.2 AU ( ca. 8 times Lunar Distance ) to the earth.  The figures of this site can be exported ...  
Looking at the distribution of distances ( "miss" distance) the cumulative distribution looks linear ... No  known asteroid of this 314 will hit the earth  , however the line can be extrapolated to the  radius of the earth , showing that one of these ( yet to be discovered ) can hit the earth in a time span of 2 years .  I created an excel file for these ....
 
Remarkable is the fact that often new asteroids are discovered  on their way to earth , getting pretty close...
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Reply #68 - 01/31/07 at 21:29:31
 
Recipe Revealed for Layer-Cake Atmosphere of a Baking Planet  Shocked
 
http://www.space.com/scienceastronomy/070131_cake_planet.html
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Reply #69 - 02/17/07 at 02:51:04
 
Still a long time to go , 5 years , to the next Venustransit on june 6th 2012
Heres a link to the Nasa-site  
http://sunearth.gsfc.nasa.gov/eclipse/transit/venus/Sun2004+2012-1.GIF.  
Simulating with high precision gave the following image . Seems to mach  Smiley
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Reply #70 - 03/03/07 at 13:26:46
 
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Reply #71 - 03/03/07 at 14:05:43
 
Live : lunar transit , from Belgium .
http://www3.mira.be/lunar-eclipse-070303.html
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Reply #72 - 03/27/07 at 18:18:39
 
Pressure of Light Can Move Liquid
http://www.livescience.com/technology/070327_laser_jet.html
 
hmm I wonder could photonic radiative pressure be one of the components of dark energy.
 
Bizarre Hexagon Spotted on Saturn  
http://www.space.com/scienceastronomy/070327_saturn_hex.html
and it's counterpart
Freak One-Eyed Monster Storm Spotted on Saturn  
http://www.space.com/scienceastronomy/061109_monster_storm.html
Just plain weird  Shocked
 
Newfound Data Could Solve NASA's Great Gravity Mystery  
http://www.space.com/scienceastronomy/070327_scitues_pioneeranom.html
 
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Reply #73 - 03/28/07 at 21:55:22
 
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Reply #74 - 03/29/07 at 09:18:44
 
Quote from abyssoft on 03/28/07 at 21:55:22:

seems weird and is promising .  
Remembers me to an article I read some time ago about an experiment which is going to be set up at the big collider ( Switserland ) where scientists will try to measure the amount of light which comes out at the end of a metal block a couple of foot thick , when hit by a strong light beam . Seems that light converts in the material into other particles , which recombine again at the end and come out as light ...Have to pick up the article  
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Reply #75 - 04/01/07 at 09:00:38
 
NASA Mission Finds Link Between Big and Small Stellar Blasts
http://www.nasa.gov/mission_pages/galex/galex-20070307.html
 
NASA Telescope Finds Planets Thrive Around Stellar Twins
http://www.jpl.nasa.gov/news/spitzer-starwars.cfm
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Reply #76 - 04/09/07 at 19:13:53
 
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Reply #77 - 04/10/07 at 12:25:23
 
Water Found in Extrasolar Planet's Atmosphere  
http://www.space.com/scienceastronomy/070410_water_exoplanet.html
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Reply #78 - 04/11/07 at 08:49:56
 
Colorful Worlds: Plants on Other Planets Might Not Be Green  
http://www.space.com/scienceastronomy/070411_nongreen_plants.html
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Reply #79 - 05/04/07 at 11:12:09
 
Corot , the European Space Planetary Hunter has detected its first extrasolar planet . This one is a hot Jupiter . More cooler ones may follow...
http://www.esa.int/esaSC/SEMCKNU681F_index_0.html
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Reply #80 - 05/09/07 at 18:55:14
 
Scientists Map Weather on Distant World  
 
http://www.space.com/scienceastronomy/070509_planet_map.html
 
Sizzling Planet Makes Some Stars Look Cool  
 
http://www.space.com/scienceastronomy/070509_hottest_planet.html
 
Wildfire Blazes Behind LA Observatory  
 
http://www.space.com/news/070509_observatory_fire.html
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Reply #81 - 05/12/07 at 21:51:06
 
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Reply #82 - 05/17/07 at 15:14:27
 
Merging Black Holes Observed in New Detail
 
http://www.space.com/scienceastronomy/070517_bhole_merger.html
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Reply #83 - 05/19/07 at 00:52:22
 
For the first time mankind saw Oberon take over Uranus' moon Umbriel
http://space.newscientist.com/article/dn11891-uranus-moons-seen-overtaking-each- other-for-first-time.html
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Reply #84 - 05/26/07 at 01:26:16
 
Black holes discovered in/on Mars
http://planetary.org/blog/article/00000984
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Reply #85 - 06/13/07 at 19:53:25
 
Not really news but some info for people outside the UK, which I gather covers the majority of members.
We have a monthly TV programme called the sky at night which covers all things astronomical. Its been running for 50 years with the same (somewhat eccentric) presenter, Sir Patrick Moore. Anyway getting back to the point, you can watch all the episodes from December 2001 online courtesy of the BBC website. Some of the older ones are low quality but quite watchable. So for anyone who is interested here is the link.
 
http://www.bbc.co.uk/science/space/spaceguide/skyatnight/
 
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Reply #86 - 08/05/07 at 16:15:52
 
Shocked New Model Eliminates More Barriers to Time Travel  Shocked
http://www.ats.org/news.php?id=169
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Reply #87 - 12/05/07 at 20:34:46
 
Been a While since something worthy has crossed my screen but here's a few
 
How to Destroy a Giant Planet  
http://www.space.com/scienceastronomy/071205-giant-planets.html
 
Dead Stars Propelled Like Rockets  
http://www.space.com/scienceastronomy/071204-white-dwarfs.html
 
First Stars Were Huge and Dark  
http://www.space.com/scienceastronomy/071203-dark-stars.html
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Reply #88 - 12/26/07 at 20:22:11
 
Here's an intriguing article:
http://www.space.com/scienceastronomy/071218-st-planet-switch.html
 
Uranus and Neptune apparently could have switched places as their orbits evolved away from the sun?
 
EDIT: I found this LPSC article that describes the model used too, it's rather interesting in its implications:
http://www.lpi.usra.edu/meetings/LEA/whitepapers/Bottke_Levison_LHB_2007.pdf
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Reply #89 - 12/31/07 at 06:29:15
 
Observing the Holmes asteroid the space telescope Hubble detected a beautiful new object heading towards Earth with amazing velocity . It is expected to ram into Earth computers soon ....
Here's the picture newly released from the Hubble space telescope .  Wink
Have a nice Silvester !
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Reply #90 - 04/10/08 at 13:33:16
 
I just discovered that the authors of the Solar System Dynamics Murray and Dermott have put some nice animations as an illustration to their book here :  
http://ssdbook.maths.qmw.ac.uk/animations/
 
This site also gives working links for the references in the book  
http://ssdbook.maths.qmw.ac.uk/References.pdf
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Reply #91 - 08/14/08 at 08:32:40
 
There sems to be some interest by a Baut-member for the Solar System Barycenter simulation :  
http://www.bautforum.com/questions-answers/77676-solar-system-barycentre-gravity .html
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Reply #92 - 09/20/08 at 07:50:31
 
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Reply #93 - 09/23/08 at 10:10:29
 
DarkFlows
http://www.space.com/scienceastronomy/080923-dark-flows.html
 
Looks like they may have found something external to our space-time that exhibits a gravitational force within our space-time.
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Reply #94 - 01/19/09 at 08:23:25
 
A simulation one can only dream of :  
Birth of the inner solar system  
http://www.newscientist.com/article/mg20126915.600-were-mercury-and-mars-separat ed-at-birth.html
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Reply #95 - 02/09/09 at 11:10:40
 
Planetary formation: more than just gravitational instability?
 
- http://www.sfsu.edu/~news/prsrelea/fy08/029.html
 
The full paper of the research can be readed here:
 
- http://www.physics.sfsu.edu/~barranco/barranco08a.pdf
 
Note:
 
The model of planets forming in vortex in planetary disc was already proposed in a research of 2005:
 
- http://www.journals.uchicago.edu/doi/pdf/10.1086/498928
 
This paper, among other things, demonstrates that this model allows the formation of planets more quickly, and in less massive planetary disc, than the old models ( gravitational instability only ).
 
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Reply #96 - 02/10/09 at 00:35:37
 
Nice links.  I know Dr. Joe Barranco, as I go to SFSU.  He likes Gravity Simulator!
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Re: Ye Olde Towne Crier (News)
Reply #97 - 02/14/09 at 02:20:09
 
http://www.sciencenews.org/view/feature/id/40390/title/The_Solar_Systems_Big_Ban g
 
REALLY interesting article about some gravitational switcheroos in the outer solar system leading to the Late Heavy Bombardment. (I've heard of this one before, but it seems to be gaining traction now!).
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Re: Ye Olde Towne Crier (News)
Reply #98 - 02/21/09 at 07:55:21
 
Quantum Gravity Theory gets a boost
http://www.skyandtelescope.com/news/39867717.html
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Ye Olde Towne Crier (News) - Solex
Reply #99 - 04/08/09 at 12:54:57
 
http://chemistry.unina.it/~alvitagl/solex/index.html
 
Not really news ...but a very nice and accurate  integrator for our solar system created by the Italian chemist Aldo Vitagliano  
Vitagliano managed to animate the Jupiter Trojans here .  
 http://chemistry.unina.it/~alvitagl/solex/hiltro.gif.  
I'm wondering if it's possible to have the Trojans in a GravSim simulation . Would be great I think !
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1.9 Earth mass exoplanet
Reply #100 - 04/21/09 at 03:49:44
 
A 1.9 Earth mass exoplanet (period 3 days)
has been detected around Gliese 581 (Mayor et al).
See
http://exoplanet.eu/planet.php?p1=Gl+581&p2=d
 
It is the lightest planet detected up to date around a main sequence star.
 
In addition, the planet Gliese 581 d has a revised period of 67 days,
bringing it in the habitable zone of the parent star.
 
Jean Schneider
 
http://exoplanet.eu/star.php?st=Gl+581
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Re: Ye Olde Towne Crier (News)
Reply #101 - 07/03/09 at 21:26:17
 
Mysterious Light Originates Near A Galaxy's Black Hole
 
http://www.space.com/scienceastronomy/090702-black-hole-radiation.html
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Re: Ye Olde Towne Crier (News)
Reply #102 - 08/12/10 at 11:58:38
 
Trojan discovered at Neptune's L5 point
http://www.astronomy.com/asy/default.aspx?c=a&id=10127
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Re: Ye Olde Towne Crier (News) : 7 planet extrasol
Reply #103 - 08/24/10 at 08:25:43
 
This can't be true ?  
http://exoplanet.eu/star.php?st=HD+10180
7 planets for this star ?  
Anxious to see the paper .
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Re: Ye Olde Towne Crier (News)
Reply #104 - 08/24/10 at 10:45:24
 
http://www.space.com/scienceastronomy/nasa-to-announce-latest-kepler-findings-10 0823.html
NASA to Reveal Big News From Planet-Hunting Spacecraft Thursday
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Re: Ye Olde Towne Crier (News)
Reply #105 - 08/26/10 at 08:57:54
 
Is the sun emitting a mystery particle?
Previously unknown particle may be meddling with decay rates of matter
http://www.msnbc.msn.com/id/38863989/ns/technology_and_science-science/
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Re: Ye Olde Towne Crier (News)
Reply #106 - 08/26/10 at 10:23:03
 
Nasa Kepler Update
http://www.nasa.gov/news/media/newsaudio/index.html valid until Sept 2
Live broadcast for the next hour
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Re: Ye Olde Towne Crier (News)
Reply #107 - 09/11/10 at 03:41:13
 
Two small asteroids made a close pass to earth last days  
http://neo.jpl.nasa.gov/news/news169.html
Here's a screenshot for 3D glasses as seen from the sun.  
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Re: Ye Olde Towne Crier (News)
Reply #108 - 12/08/10 at 01:09:48
 
Not exactly "news" (it's two years old), but it's an interesting scientific paper relevant to our interests here Smiley
 
Stability of the Distant Satellites of the Giant Planets in the Solar System, by Shen and Tremaine (2008),  
http://iopscience.iop.org/1538-3881/136/6/2453
 
Fortunately it's in a free issue of the Astronomical Journal, so you can grab the PDF for free! I've only skimmed it so far, but the very interesting thing is that it says that there can be stable satellite orbits outside the planet's Hill Sphere, which I at least wasn't previously aware of. So check it out if you're interested!
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Re: Ye Olde Towne Crier (News)
Reply #109 - 12/09/10 at 09:51:02
 
Venus has a (quasi-satellite) moon?
 
http://www.universetoday.com/81575/venus-has-a-moon/
 
Apparently there's an asteroid in a 1:1 resonance with it! There's something to play with in gravity simulator Wink
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Re: Ye Olde Towne Crier (News)
Reply #110 - 12/09/10 at 10:37:24
 
Quote from Mal on 12/09/10 at 09:51:02:
There's something to play with in gravity simulator Wink

Been there.  Done that: http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl?num=1176415775/0
Looks like we stumped Universe Today by over 3 years!
 
The paper you linked to yesterday seems like it's considering quasi satellites as well when talking about satellites that are stable beyond 2 Hill Spheres.
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Re: Ye Olde Towne Crier (News)
Reply #111 - 12/09/10 at 12:48:31
 
Quote from Tony on 12/09/10 at 10:37:24:
Been there.  Done that: http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl?num=1176415775/0
Looks like we stumped Universe Today by over 3 years!

 
Nice! Seriously, I wonder why scientists don't seem to know about Gravity Simulator.  
I was reading an article yesterday about "curiosity-driven science" and how essential it is ( http://www.nature.com/news/2010/101117/full/468347a.html ), and it seems that everything we do on gravsim forums is definitely curiosity-driven - and look at the stuff we find!
 
Quote:
The paper you linked to yesterday seems like it's considering quasi satellites as well when talking about satellites that are stable beyond 2 Hill Spheres.

 
Yeah, I thought that a rather neat coincidence Smiley.
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Re: Ye Olde Towne Crier (News)
Reply #112 - 12/10/10 at 15:39:27
 
Quote from Tony on 12/09/10 at 10:37:24:
Quote from Mal on 12/09/10 at 09:51:02:
There's something to play with in gravity simulator Wink

Been there.  Done that: http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl?num=1176415775/0
Looks like we stumped Universe Today by over 3 years!

The paper you linked to yesterday seems like it's considering quasi satellites as well when talking about satellites that are stable beyond 2 Hill Spheres.

Yeh , nice work !
When I read the old articles about the subject again  I see also 2001CK32 (http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl?num=1175113160/19#19) was suspected to show Trojan behaviour . I've just started a sim in rotating frame on Venus and yep ! it seems to be in a tadpole orbit  nowadays around Venus .  
Will try to upload an animation later .
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Re: Ye Olde Towne Crier (News)
Reply #113 - 12/15/10 at 23:28:21
 
Attn: Planet Hunters! There's a new "citizen science" site (like Galaxy Zoo and Moon Zoo) where you can go through Kepler stellar transit data and possibly find planets!  
 
http://www.planethunters.org/
 
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Re: Ye Olde Towne Crier (News)
Reply #114 - 12/16/10 at 07:03:49
 
Very cool Thanks I like the interface, Think I may have spotted a couple hot jupiters.
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Re: Ye Olde Towne Crier (News)
Reply #115 - 02/02/11 at 12:42:56
 
How does a 6-planet system sound (all of which are transiting!!!)
 
http://www.nasa.gov/mission_pages/kepler/news/new_planetary_system.html
 

 
That'd be an interesting one to simulate...  
http://exoplanet.eu/star.php?st=Kepler-11
 
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Re: Ye Olde Towne Crier (News)
Reply #116 - 05/12/11 at 02:01:05
 
More news about retrograde Hot Jupiter orbits (and a paper!):
 
http://www.universetoday.com/85585/the-flip-side-of-exoplanet-orbits/
 
The paper can be downloaded from here: http://arxiv.org/abs/1011.2501
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Re: Ye Olde Towne Crier (News)
Reply #117 - 07/27/11 at 11:31:14
 
Earth's first trojan discovered! (2010 TK7)
 
http://www.nature.com/nature/journal/v475/n7357/full/nature10233.html
 
Anyone want to model it? Wink
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Re: Ye Olde Towne Crier (News)
Reply #118 - 08/04/11 at 11:51:57
 
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Re: Ye Olde Towne Crier (News)
Reply #119 - 09/01/11 at 10:11:25
 

Something to simulate with Gravsim ?  
 
http://arxiv.org/PS_cache/arxiv/pdf/1108/1108.3375v1.pdf
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Re: Ye Olde Towne Crier (News)
Reply #120 - 09/01/11 at 21:37:07
 
Thanks for the link.  Somewhere on this forum or perhaps on the BAUT forum I describe a method for using Gravity Simulator to compute how often Earth gets hit from asteroids.  I exaggerate Earth's size to increase the likelyhood of a collision, then adjust my figure accordingly.  The same method might be useful for anyone wanting to simulate the experiments in this paper.
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Re: Ye Olde Towne Crier (News)
Reply #121 - 09/01/11 at 21:39:39
 
Quote from EDG on 07/27/11 at 11:31:14:
Earth's first trojan discovered! (2010 TK7)

http://www.nature.com/nature/journal/v475/n7357/full/nature10233.html

Anyone want to model it? Wink

Sorry, I missed this post while out of town over the Summer.
http://www.orbitsimulator.com/gravity/simulations/2010TK7.gsim
Here's a sim of this asteriod.
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Re: Ye Olde Towne Crier (News)
Reply #122 - 09/15/11 at 15:26:39
 
Circumbinary Exoplanet, first of it's kind to be detected
 
 
Planet : Kepler-16 (AB) b
 
http://exoplanet.eu/planet.php?p1=Kepler-16+(AB)&p2=b
 
 
What Laurance Doyle thinks of 'Tatooine' discovery
 
http://www.msnbc.msn.com/id/44538710/ns/technology_and_science-space/
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Re: Ye Olde Towne Crier (News)
Reply #123 - 01/18/12 at 21:39:38
 
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Re: Ye Olde Towne Crier (News)
Reply #124 - 03/14/12 at 21:08:24
 
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Re: Ye Olde Towne Crier (News)
Reply #125 - 09/24/12 at 21:23:11
 
Earth-Sun Distance Measurement Redefined
 
from http://www.space.com/17733-earth-sun-distance-astronomical-unit.html
 
One of the stalwart units of astronomy just got a makeover. The International Astronomical Union, the authority on astronomical constants, has voted unanimously to redefine the astronomical unit, the conventional unit of length based on the distance between the Earth and the sun.
 
"The new definition is much simpler than the old one," says Sergei Klioner of the Technical University of Dresden in Germany, one of a group of scientists who worked decades toward the change, which took effect last month during an IAU meeting
 
Under the new definition, the astronomical unit (or AU) — the measurement used for the Earth-sun distance — is no longer always in flux, depending on the length of a day and other changing factors. It is now a fixed number: 149,597,870,700 meters, which is the equivalent of almost 92.956 million miles.
 
...
 
more at source
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Re: Ye Olde Towne Crier (News)
Reply #126 - 04/20/14 at 00:36:44
 
Sounds like another thing to play with in gravsim...
http://phys.org/news/2014-04-mighty-jupiter-earth-habitability.html
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Re: Ye Olde Towne Crier (News)
Reply #127 - 05/09/14 at 09:41:36
 
http://cfht.hawaii.edu/en/news/FirstTrojanUranus/
 
We must have missed this news : first uranian trojan discovered .  
 
http://www.planetary.org/blogs/guest-blogs/2013/0430-2011hm102-new-neptune-compa nion.html
 
Also : some new neptunian trojans discovered in L5 ,adds up  the number to 3 in L5.
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Re: Ye Olde Towne Crier (News)
Reply #128 - 06/09/14 at 17:11:57
 
Gravity Simulator got a mention in one of Brian Koberlein's posts about orbital dynamics and the Kozai mechanism! http://briankoberlein.com/2014/06/09/twist-shout-2/
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Re: Ye Olde Towne Crier (News)
Reply #129 - 06/11/14 at 01:24:17
 
Thanks for the link!  Interesting blog.
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Re: Ye Olde Towne Crier (News)
Reply #130 - 04/05/15 at 00:39:21
 
Tony ,
You're on APOD today !
http://apod.nasa.gov/apod/astropix.html
( last link )
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Re: Ye Olde Towne Crier (News)
Reply #131 - 04/05/15 at 11:25:26
 
Nice catch!  How did you happen to find that?
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Re: Ye Olde Towne Crier (News)
Reply #132 - 04/05/15 at 12:46:47
 
Smiley  
I have some routine in live Tony . When I wake up I check some interesting sites , such as Orbitsimulator , APOD ,...Rosetta , ...Universe Today , ...
In this order Smiley
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Re: Ye Olde Towne Crier (News)
Reply #133 - 04/29/15 at 10:16:40
 
Conference abput New Horizons about to begin :  
http://www.nasa.gov/news/media/newsaudio/index.html
Curious what's coming ....
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Re: Ye Olde Towne Crier (News)
Reply #134 - 04/29/15 at 18:34:43
 
Surface features and a polar cap.
Strange it would have a polar cap since its pole is pointing in the general direction of the Sun.
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Re: Ye Olde Towne Crier (News)
Reply #135 - 05/01/15 at 15:02:19
 
yes , that's true Tony , Pluto's pole is more or less pointing to the sun . Strange Nasa believes to see a polar cap . If there's some sort of cap it should be to more to the eqautor . Perhaps that's just what we see in the pictures .  
Exiting weeks to come ....
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