From changes in solar activity to shifts in climate and atmosphere, the study of Earth’s future often reveals as much about the present as it does about the distant end. Researchers using a NASA supercomputer have modeled Earth’s long-term evolution ...

It's almost as old as the Universe, and as massive as 34 billion Suns. It eats stars for breakfast. And now it's about to consume our own. Behold, the great and powerful black hole with the catchy name J2157.