Leisher wrote:They may not visit, but the math says they're out there.
Too many unkowns to really even form an educated guess. Was watching a NOVA on Mars the other day. They were explaining why Mars doesn't have any life now. Doesn't have an atmosphere because it wasn't big enough to have a molten core. Ferrite has to be in the core to produce the magnetic field (we think... still only theories as to why we have a magnetic field). So the solar winds stripped the atmosphere away. Do we have any way of determining if these planets we're finding have a magnetic field at this point?
Don't get me wrong, I think the stuff we're learning is fascinating and we should keep doing it. It seems like they're making a lot of uneducated guesses to the point of wish-casting when they report some of this stuff. And I understand it. You want the generate interest in what you're doing.
This should probably be in the space thread.