-
Dyson spheres could really exist — but there's a catchIs it possible to build a Dyson sphere that isn't catastrophically unstable? New research says yes, but only in one type of star system.
14 Commentsextraterrestrial-life -
Intelligent aliens would need a power supply to jump-start their civilization — would they require fossil fuels?Fossil fuels powered the industrial revolution. Would aliens need a similar power source to jump-start a technical revolution?
extraterrestrial-life -
Extraterrestrials quiz: Are you an alien expert, or has your brain been abducted?Quiz Try this aliens quiz and see how much you know about our interstellar neighbors — if there are any.
2 CommentsQuiz -
'Perhaps it's only a matter of time': Intelligent life may be much more likely than first thought, new model suggestsFor decades, scientists assumed that life on Earth emerged through a chain of highly improbable flukes. But a new theory suggests it may have instead arrived just in time.
4 Commentsextraterrestrial-life -
The existence of intelligent aliens is 'highly likely' — and they could await in our own galaxyAccording to astronomers, there are approximately 200 billion trillion stars in our observable universe — chances are, there’s life out there somewhere.
9 Commentsextraterrestrial-life -
Did people report seeing UFOs before the 20th century?Are UFO sightings a 20th-century phenomena, or did people report seeing them earlier in history?
extraterrestrial-life -
Alien life may look nothing like life on Earth — so how should we go about looking for it?Alien life might look unlike anything we've ever seen on Earth. Trying to find evidence of these unknown organisms will require some creativity.
extraterrestrial-life -
12 strange reasons humans haven't found alien life yetScientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 intriguing theories ...
extraterrestrial-life -
'It's hard not to believe he saw something': Historian Greg Eghigian on how UFOs took over the worldWhat do UFO sightings tell us about ourselves? And will they ever be explained? Historian Greg Eghigian tells us how he's trying to find out.
extraterrestrial-life
