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Author Topic: Earth-like planet could harbour life  (Read 1833 times)

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Offline Karlos

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Re: Earth-like planet could harbour life
« on: September 04, 2004, 08:51:38 PM »
Doesn't sound that earth like to me ;-)

With a 9.5 day orbital period, one expects it has quite a high surface temperature, and at 14 earth masses, should have one mean surface gravity. Unless the atmosphere is relatively thin, it would have quite some surface pressure.

Gravity aside, I'd imagine it was probably more venus like than earth like...
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Offline Karlos

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Re: Earth-like planet could harbour life
« Reply #1 on: September 04, 2004, 09:02:19 PM »
I guess the implication is that the planet is a lot more earth like than the other extrasolar planets so far discovered - particularly those large gas giants that orbit close to their star. Such environments would be alien compared to anything in the solar system.

-edit-

The surface gravity wouldn't necessarily be 14G's, it depends on the planetary radius as well as the mass. But it would surely be a lot higher than it is here :-)

I wonder how old it is? If it is very ancient, it might be the remainder of one of those freaky near orbit gas giants that's had its atmosphere ablated away by the solar wind (although a jupiter like planet would have an awesome magnetic field to sheild it - but at 9.5 days orbital time implies a very close proximity to the star). If it were in a more distant orbit, one would assume such mass would form the solid core of a moderate sized gas giant.
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