posted on Nov, 16 2012 @ 10:15 AM
From our point of view, the increase in weight would be very challenging. I was thinking more of life native to this planet, and how it would adapt.
Something able to stand upright and free its forelimbs for use as manipulators, and eventually tool using and tool making appendages still seems
reasonable on a world with twice our gravity. If the gravity were, instead, 7 times that of Earth, this would seem less likely.