An active Earth's hot core/mantle and greenhouse gases could keep things pretty warm. n/t
An active Earth's core/mantle and greenhouse gases could keep things pretty warm.
Speaking of the Earth's core:
http://www.iop.org/Physics/News/0406p.
Another one: http://www.astrobiology.com/asc2000/abstract.html?ascid=139
Thankfully, the Earth, after it's formation and cooling, did not overheat or freeze entirely. Having a moon and magnetosphere helps.
(One article of many out there)Panspernia is an interesting topic and it's possibilities should not be ruled out.
Marcia
-yes, Phil, it's good, interesting stuff. :)