What If the Earth Was Flat?

Gravity Fails

First of all, a pancaked planet might not have any gravity. It's unclear how gravity would work, or be created, in such a world, says James Davis, a geophysicist at Columbia University's Lamont-Doherty Earth Observatory. That's a pretty big deal, since gravity explains a wide range of Earthly and cosmic observations. The same measurable force that causes an apple to fall from a tree also causes the moon to orbit the Earth and all the planets to orbit the sun.