Gravitational Waves from the Big Bang
Thursday, March 20, 2014
This week, scientists announced that they've found evidence of gravitational waves, a long-predicted twist in light from the Big Bang. The finding offers proof of the theory that the universe expanded extremely quickly in the first fraction of a second after it was born. Clara Moskowitz, an associate editor at Scientific American, explains what this discovery means and what it tells us about the creation of the universe.