|
|
|
|
|
|
|
|
|
 Posted: Fri Aug 12, 2005 4:41 pm
[ Message temporarily off-line ]
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Posted: Sat Aug 13, 2005 6:00 am
It's bound to be very different from Earth. The surface gravity I've calculated is something like 21.8 m/s^2, or about 2.2 times Earth's gravity.
A solid planet of that mass would have an intensely hot core, so it could have a very strong magnetic field. It's likely to have a very different chemical composition.
If you want to look at a very Earthlike planet, look at Venus. Same size, same composition, similar distance from the Sun... but totally different in any way that's relevant to us.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Posted: Sat Aug 13, 2005 9:02 am
Very true. I'm willing to bet that Venus could have supported life if whatever settled the newborn Earth had happened to it as well. The reason they're excited about this discovery however is that this is the very first, the only, rocky extrasolar planet discovered. Most are gas giants. What's shocking is that there seems to be a trend with gas giants being extremely close to the sun, having revolutions that only take a week to complete.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Posted: Mon Aug 15, 2005 11:39 am
Xander LeMagre Very true. I'm willing to bet that Venus could have supported life if whatever settled the newborn Earth had happened to it as well. The reason they're excited about this discovery however is that this is the very first, the only, rocky extrasolar planet discovered. Most are gas giants. What's shocking is that there seems to be a trend with gas giants being extremely close to the sun, having revolutions that only take a week to complete. I'm curious of these, though. Some are 10 times the size of Jupiter, but their atmosphere practically skids across their sun's. Roasters they're called, right?
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Posted: Tue Aug 16, 2005 6:02 am
Dark Duei Xander LeMagre Very true. I'm willing to bet that Venus could have supported life if whatever settled the newborn Earth had happened to it as well. The reason they're excited about this discovery however is that this is the very first, the only, rocky extrasolar planet discovered. Most are gas giants. What's shocking is that there seems to be a trend with gas giants being extremely close to the sun, having revolutions that only take a week to complete. I'm curious of these, though. Some are 10 times the size of Jupiter, but their atmosphere practically skids across their sun's. Roasters they're called, right? I believe so. The theory behind them is that they formed further away from the sun, and spiraled in. It's really intriguing.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reply
