We know that aliens are among us. The United States wouldn't spend so much time tracking down the illegal ones if that weren't true. But recent discoveries of nearby Earth-like planets are raising questions about that other kind of alien... aliens from outer space. Chances are they're out there somewhere.
USA Today reported Wednesday that a planet the size of a 'jumbo Earth' has been found circling a nearby star. Dully named LHS 1140b, scientists say the planet is exposed to enough light from its star to allow for liquid water, a requirement for life as we know it here on Earth. The great thing for astronomers is that 1140b is close enough that they may be able to learn more about it, especially after the new James Webb Space Telescope is launched next year. It may even be able to tell us if there is oxygen there. But don't expect little green men like Marvin the Martian to arrive on the Earth Express any time soon.