In this video, we discuss the reports about the detection of a pair of supermassive black holes orbiting only one light year apart from each other. Studying the dance of these giants should tell us a ton about how black holes grow.
Astronomers haven't been able to find up to half of the baryonic matter in the universe.
It turns out that "nothing" is one of the most interesting somethings in all of physics.
Can we ever achieve absolute cold?
