Astronomers Discover a New Planet Orbiting the Closest Star to the Sun!

There's no other way to phrase it. This is HUGE news: Astronomers have found a planet orbiting the Proxima Centauri, the closest star to the Sun! Holy wow. Seriously. Wow. Before I get into details, let me sum up what we know: The planet, called Proxima Centauri b or just Proxima b (exoplanets are given their star's name plus a lower case letter in order of discovery, starting with "b"), orbits Proxima every 11.2 days. It has a mass of no less than 1.3 times the Earth's, so if it's rock and meta...