Is There Intelligent Life Beyond Earth?

In the second part of this two-part series, Joe Hanson of It’s Okay to be Smart takes a look at what astronomers are looking for to determine whether an alien planet has life. What do we look for and listen for? We don’t have all the time in the world, so to speak. Life on Earth will disappear when the Sun begins to burn out in a few billion years. Stay tuned to the end for the moving words of author Ray Bradbury.

See the first part of the series, Exoplanets, Other Earths, here.