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Posted on 01/21/2005 9:19:56 AM PST by SunkenCiv
Astronomers have found about 140 planets outside our solar system. Most are more massive than Jupiter, and some are much more massive. Astronomers have been scrambling to figure out where to draw the line between a giant gas planet and a brown dwarf. Complicating the matter, several objects that appear to be in the acceptable mass range for planets -- up to about 15 Jupiter masses -- were discovered about five years ago floating freely in space, not bound to any star... Brown dwarfs, especially when they are young, give off heat, which can be detected as infrared radiation. But AB Dor C is 120 times fainter than its host star even in the near-infrared.
(Excerpt) Read more at story.news.yahoo.com ...
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18 Homeless Planets Discovered"Lost in space" takes on a whole new meaning with 18 newly found orbs in the Orion constellation. The huge planet-like objects have no place to call home -- instead they drift through the cosmos sans any central star around which to orbit. If these "free floaters" -- as scientists call them -- truly are planets, then theories about how planets form will be called into question... "The formation of young, free-floating, planetary-mass objects like these are difficult to explain by our current models of how planets form," said lead author Maria Rosa Zapatero Osorio, a Spanish researcher currently working at the California Institute of Technology. Others agree: "There is no consensus yet on how to form free-floating planet-mass objects," says David Charbonneau of the Harvard-Smithsonian Center for Astrophysics. "Tackling this question over the next few years will be a lot of fun."
by Robert Roy Britt
5 October 2000
New evidence for the Moon's soft middle
New Scientist ^ | 14 February 2002 | Will Knight
Posted on 12/27/2004 2:29:35 PM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1309193/posts
Scientists Find That Saturn's Rotation Period Is A Puzzle
University of Iowa ^ | June 28, 2004 | Gary Galluzzo and Don Gurnett
Posted on 01/13/2005 6:00:04 PM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1320410/posts
Spitzer Sees the Aftermath of a Planetary Collision
Universe Today ^ | Jan. 10, 2005 | Dolores Beasley and Gay Yee Hill
Posted on 01/13/2005 8:50:18 PM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1320521/posts
The Yardangs of Mars
Geological Society (UK) ^ | July 24, 2004 | staff
Posted on 01/01/2005 11:18:55 AM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1312117/posts
interesting data at this new topic, but it's shaping up like another crevo bloodbath, so I'm treating it as if it were read-only.
Rapid-born planets present 'baby picture' of our early solar system
EurekAlert | September 9, 2005 | Staff
Posted on 09/09/2005 9:39:51 PM PDT by DaveLoneRanger
http://www.freerepublic.com/focus/f-chat/1481572/posts
Scientific maverick's theory on Earth's core up for a test
SF Chronicle | Monday, November 29, 2004 | Keay Davidson
Posted on 12/05/2004 11:17:28 AM PST by SunkenCiv
http://www.freerepublic.com/focus/chat/1294934/posts
bump, with links:
Far-out worlds, just waiting to be found
New Scientist | 23 July 2005 (issue date) | Stuart Clark
Posted on 07/20/2005 10:54:18 PM PDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1447339/posts
Astronomers Find a New Planet in Solar System
The New York Times | 7/29/05 | KENNETH CHANG
Posted on 07/29/2005 3:35:26 PM PDT by Right Wing Professor
http://www.freerepublic.com/focus/news/1453462/posts
Earth: no longer the lonely planet
SpaceRef | 9/26/03
Posted on 09/27/2003 10:19:20 AM EDT by KevinDavis
http://www.freerepublic.com/focus/f-news/990576/posts
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