How to Signal Aliens
Season 1 Episode 25 | 6m 14s
Everyone has their own opinion as to whether or not aliens exist. But let’s assume they do for a second and we wanted to let them know we're here!!!! How should we signal our species' existence through the expanse of space? There are a few options, but which is the most effective and the cheapest? Find out in this week’s episode of PBS Space Time!
Aired: 04/03/16Video has closed captioning.