The universe is too big for us to be alone, right? A NASA scientist weighs in

Are we alone in the universe? This is something many have already wondered. In this video from Wired, a NASA scientist (David Dr. Grinspoon) answers our questions about the possibility of extraterrestrial life.

Grinspoon believes intelligent life exists somewhere beyond Earth. The cosmos is vast, and how could we be the only ones? Although he admits that we currently lack definitive evidence, he is optimistic that we are on the road to discovery.

From YouTube:

“NASA Senior Astrobiology Strategy Scientist David Dr. Grinspoon joins WIRED to answer the Internet’s burning questions about astrobiology. Where do astrobiologists work? How likely is it that humans are not alone in the universe? Have credible UFO sightings been documented? What is REALLY going on at Area 51? Was there ever life on March? Answers to these questions and many others await the support of Astrobiology.”