September 25, 2013 How far can humans go? Farther than we know. That's one of the lessons we can learn from the Voyager spacecraft, says physicist Marcelo Gleiser. He sees these missions as the embodiment of our hope that we are not alone in the universe, that there may be other beings out there who embrace life and beauty.
March 5, 2013 It may be far more likely that our first evidence of intelligent life in space will come by detecting their industrial waste. Commentator Adam Frank highlights a study on how we might spot the signs from Earth.
August 15, 2012 Thirty-five years ago today an astronomer wrote "Wow!" when he saw evidence of what might have been a message from deep space. One like it hasn't been detected since. Today, National Geographic's Chasing UFOs sends a reply.
June 13, 2012 Ridley Scott's movie Prometheus makes us wonder about the benefits and risks of trying to artificially create life and intelligence in our labs. Could our creations destroy us?
May 29, 2012 The new twist proposed a couple of years ago is that even if the microbes are dead when the rocks crash to earth, the information in their DNA might play a role in triggering or helping life here.
May 23, 2012 Can we distinguish between ultra-advanced aliens and gods? Crazy as it may sound, commentator Marcelo Gleiser says this line of reasoning is sound and blurs the boundary between the natural and the supernatural.
August 16, 2011 The SETI Institute's mothballed Allen Telescope Array — which scans the universe for signs of alien life — will soon be up and running again, thanks to more than $200,000 in donations that came from people including Jodie Foster and former astronaut Bill Anders.