black hole

Black Hole Bonanza

A black hole forms when a star's core collapses, increasing in density until its gravitational pull becomes too powerful for light to escape. This creates a singularity -- and it happens in less than a second. Learn more about black holes in this podcast.

When Black Holes Dance

Do you remember the part in Michael Jackson's "Beat It" video where the two rival gangs square up for battle, only for the situation to escalate into a full-blown dance number? Well, astronomers have long predicted that a vaguely similar relationship emerges when black holes meet in a cosmic standoff, and now they even have compelling evidence.