What We Know So Far About Earth's New Twin
Proxima b, a planet orbiting the closest star to our own, might be our best chance of finding life outside our solar system.By Steven Sparkman | August 24, 2016
A new planet has been discovered that may be Earth-like, and it's really, really close. If we're ever going to look for life outside our solar system, this is probably where we'll start. Here's what scientists say about it.
The planet might have liquid water, which is crucial to life as we know it. It's in the habitable zone, that sweet spot where it's not too hot nor too cold to have water on its surface.
The planet orbits the closest-known star to ours, Proxima Centauri, which is about 4.25 light years away. It's in the southern sky, but it's too dim to see with the naked eye.