Black holes have captivated scientists for more than a century. How well do you know these supermassive wonders of the universe?

Back in the 19 nineties, astronomers started to see growing evidence that the universe was accelerating. We thought gravity ...

The study finds that, in this scenario, the universe would eventually grind to a halt and decay into nothing, a process these scientists call the “long freeze.” All good things must come to an end, ...