Are there intelligent aliens out there? (opens in new tab)

Astrobiologist, David Grinspoon from the Planetary Science Institute thinks so\. \"It might not happen for a thousand years, but it could happen next year\", he says of the chance of receiving a signal from life deep in space\. And even if that wasn't enough, the chance of finding bio signatures on Mars or on Europa is high, giving us even more reason to go back there\. Tap link to learn more: