Have Humans Already Conquered The Threat Of Extinction?

The Great Filter theory suggests that all advanced civilizations eventually destroy themselves before acquiring the capacity to colonize space — a notion that could explain why we've never been visited by aliens. But there may be another reason for the celestial silence. Yes, the Great Filter exists, but we've… » 9/01/14 11:00am 9/01/14 11:00am

It’s Easier for Aliens to Visit Us Than Previously Thought

A new study suggests that by using the slingshot effect to propel self-replicating probes through interstellar space, an advanced extraterrestrial civilization should be able to visit every corner of the galaxy in a startlingly short amount of time. The Fermi Paradox, it would seem, is alive and well. » 7/25/13 8:15am 7/25/13 8:15am

11 of the Weirdest Solutions to the Fermi Paradox

Most people take it for granted that we have yet to make contact with an extraterrestrial civilization. Trouble is, the numbers don’t add up. Our Galaxy is so old that every corner of it should have been visited many, many times over by now. No theory to date has satisfactorily explained away this Great Silence, so… » 3/20/13 10:01am 3/20/13 10:01am

The Great Filter theory suggests humans have already conquered the…

It's difficult to not be pessimistic when considering humanity's future prospects. Many people would agree that it's more likely than not that we'll eventually do ourselves in. And in fact, some astrobiologists theorize that all advanced civilizations hit the same insurmountable developmental wall we have. They call… » 12/21/12 11:00am 12/21/12 11:00am

With all these exoplanets, where the hell is the alien life?

If there's one thing the Kepler mission has taught us, it's that planets are everywhere. Lately, it seems like if we're not discovering new exoplanets, we're finding evidence that there are hundreds of billions of them out there (many of them probably even Earthlike), and we just haven't found them yet. » 6/25/12 4:00pm 6/25/12 4:00pm