Venus's Surface May be 1 Billion Years Old

dptalia writes: "For a while scientists have believed that Venus's surface is fairly young, having recently been covered by lava from 1 to 3 kilometers deep. However, more study into photos sent back by Magellan seems to show that the cataclismic volcano theory is wrong. Now scientists are postulating that Venus's surface may be a billion years old and could be probed to determine the history of the planet."