How scientists will use artificial intelligence to find aliens

Astronomers first discovered planets beyond our own solar system in the early 1990s. Since then, scientists have tagged 3,400 of these exoplanets. Now they want to determine which might be home to extraterrestrial life. But researchers sometimes spend days or even weeks analyzing a single exoplanet. New instruments like the James Webb Space Telescope, which launches in 2018, will soon be piping back so much information that scientists won't be able to manually process it.