Do you think Jesus visited all those planets to save their people? Sure, right? Jesus wouldn't leave anyone out. He's all-good, after all. Busy guy, though. Good thing he got around to visiting Earth. Hmmm, I wonder if Earth was an afterthought. We sure are lucky he came here, huh?(Phys.org)—The quest for a twin Earth is heating up. Using NASA's Kepler spacecraft, astronomers are beginning to find Earth-sized planets orbiting distant stars. A new analysis of Kepler data shows that about 17 percent of stars have an Earth-sized planet in an orbit closer than Mercury. Since the Milky Way has about 100 billion stars, there are at least 17 billion Earth-sized worlds out there.