2newcw11 thefan-am1090seattle-logo-fina2l

geothermal activity

Geothermal activity can be generated by the gravitational pull of a planetary companion. (Lynette Cook/NASA/Getty Images)

Study: Alien Planets Could Host Life For Up To 10 Trillion Years

Geothermal activity can be generated by the gravitational pull of a planetary companion.

CBS Seattle–08/12/2014

Follow

Get every new post delivered to your Inbox.

Join 1,092 other followers