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Hot Jupiters do not rule out alien Earths
New Scientist Space ^ | 03/31/06 | Maggie McKee

Posted on 03/31/2006 5:21:28 PM PST by KevinDavis

Habitable, Earth-like planets can form even after giant planets have barrelled through their birthplace on epic migrations towards their host stars, new computer simulations suggest. The finding contradicts early ideas of how planets behave and suggests future space missions should search for terrestrial planets near known "hot Jupiters".

Many of the 160 or so known extrasolar planets are hot Jupiters - massive planets that are closer to their stars than Mercury is to our Sun. But the planets probably did not form in these scorching regions because there would not have been enough gas and dust there to amass such giant worlds.

That suggests the planets formed farther out and migrated towards their host stars as they lost energy due to friction with gas in their natal discs. But that migration was thought to prevent the formation of terrestrial planets. That is because the roving giants would hit or fling their rocky building blocks out of the planetary system, says Avi Mandell of Pennsylvania State University in University Park and NASA's Goddard Space Flight Center in Greenbelt, Maryland, US.

(Excerpt) Read more at newscientistspace.com ...


TOPICS: Miscellaneous; News/Current Events
KEYWORDS: earth2; exoplanets; space; xplanets

1 posted on 03/31/2006 5:21:30 PM PST by KevinDavis
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To: RightWhale; Brett66; xrp; gdc314; anymouse; NonZeroSum; jimkress; discostu; The_Victor; ...

2 posted on 03/31/2006 5:22:21 PM PST by KevinDavis (http://www.cafepress.com/spacefuture)
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To: KevinDavis
You know, there's so much wishful thinking on this subject that it's just ridiculous. Future generations will marvel at how the desire to believe in life besides our own was so continuously translated into hopeful-sounding "science" like this that makes it seem like life should be behind every rock in the universe.

Oh, I guess I'm raining on somebodies' parade. But really, life is interesting enough without indulging in such fantasies (at taxpayer expense usually).

3 posted on 03/31/2006 6:32:41 PM PST by Liberty1970
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To: Liberty1970

I much rather see tax payer expense being spent on space exploration than on welfare exploration...


4 posted on 03/31/2006 7:02:38 PM PST by sit-rep (If you acquire, hit it again to verify...)
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To: Liberty1970

Herad the same nonsense you are spouting from a liberal this week. He called the search mental masturbation. Of course the same people said that about Columbus, Einstein, Going to the moon etc etc.


5 posted on 03/31/2006 7:03:41 PM PST by Sentis
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http://www.freerepublic.com/focus/f-chat/1204850/posts?page=8#8


6 posted on 03/31/2006 9:45:17 PM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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To: 75thOVI; AndrewC; Avoiding_Sulla; BenLurkin; Berosus; CGVet58; chilepepper; ckilmer; Eastbound; ...
Ping!
7 posted on 03/31/2006 11:59:56 PM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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To: vannrox

Solar system similar to ours discovered: US astronomers
Yahoo! News via Drudge | June 13, 2002 | Yahoo! News staff
Posted on 06/13/2002 7:17:37 PM EDT by Exit 109
http://www.freerepublic.com/focus/news/699740/posts

Deadly Dance: Giant Planet Found Orbiting Huge Star
space DOT COM | 23 January 2003 | By Robert Roy Britt
Posted on 01/29/2003 9:26:26 AM EST by vannrox
http://www.freerepublic.com/focus/news/831745/posts

All of a Sudden, the Neighborhood Looks a Lot Friendlier
NY Times | September 21, 2004 | DENNIS OVERBYE
Posted on 09/21/2004 6:38:18 PM EDT by neverdem
http://www.freerepublic.com/focus/f-news/1222888/posts

Moving the Orbits of Planets
David Jewitt | Last updated Sep 2004 | David Jewitt
Posted on 02/02/2006 12:44:25 PM EST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1570230/posts


8 posted on 04/01/2006 8:22:51 AM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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Catastrophism

9 posted on 04/01/2006 8:23:11 AM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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To: Liberty1970
I am probably late in the thread but I have to put in my two cents on this.

You must have a very low opinion of our creator, I mean what a waste of space and opportunity it would be if that were true, that is we are his only creation. It is unimaginable how big the universe is I just can not accept that we are alone in it.

10 posted on 04/01/2006 10:02:43 AM PST by quesera ("The only thing required for evil to triumph is for good men to do nothing." Edmund Burke)
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Death Spiral: Why Theorists Can't Make Solar Systems
SPACE.com | Tue March 28, 2006 | Ker Than
Posted on 03/29/2006 1:21:37 PM EST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1605529/posts


11 posted on 04/01/2006 7:37:54 PM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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