In the vastness of the universe, there are likely to be nearly countless planets. The big question for humans, of course, is whether even a single one of them could support life.
NASA's Kepler satellite, which is scheduled to lift off at 10:49 p.m. EST tonight, is headed out to keep watch on a patch of the Milky Way for at least three and a half years. Unlike the Hubble space telescope, Kepler won't be taking brilliant pictures suitable for framing. Instead, it will look for minute changes in the brightness of stars--some 100,000 of … Read more