Proxima Centauri, just 4.24 light-years from Earth, is the closest known star to our Sun. Though it’s the smallest member of ...

In October 2017, astronomers detected something extraordinary, an object named 'Oumuamua, the first known interstellar visitor to enter our Solar System. Unlike any comet or asteroid we’ve seen before ...

The punishing radiation appears to be causing the planet to shed its atmosphere at a rate of at least 1 trillion grams per second, according to a new study involving NASA 's Chandra X-ray Observatory.