Why do we care about gravitational waves?
Season 1 Episode 17 | 4m 29s
On Feb 11, 2016 Scientists at LIGO announced that they had detected gravitational waves for the first time. Einstein predicted the existence of these waves in his 1915 theory of general relativity. But it took a long time for us to come up with the technology to detect them.
Aired: 07/24/16Video has closed captioning.