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Stephen Hawking and a Russian Billionaire Want to Build an Interstellar Starship

Last year, the search for extraterrestrial intelligence got a major boost when Russian billionaire Yuri Milner unveiled a $100 million effort to scan the skies for radio and light signals emitted by aliens. Not content to simply sit tight and wait for ET to hail us, Milner now plans to build interstellar spacecraft.…

This Is How We Could Hide Our Planet From Bloodthirsty Aliens

Humans have long dreamed of discovering intelligent life beyond Earth. But truth is, we have no way of knowing if an alien civilization would be friendly or hostile. Should we have the rotten luck of discovering the Borg, we’ll need to get our collective asses into hiding quickly—and a team of astronomers thinks they…

New Solution to Fermi Paradox Suggests Alien Life Goes Extinct Early

We have yet to discover a single trace of alien life, despite the extremely high probability that it exists somewhere. This contradiction is popularly known as the Fermi Paradox. A new theory attempts to solve this conundrum by suggesting that habitable planets are quite common in our galaxy, but nascent life gets…

Mysterious Wow! Signal Came From Comets, Not Aliens, Claims Scientist

In 1977, astronomer Jerry R. Ehman observed a data signal so unique he drew a red circle around it and wrote “Wow!” to emphasize the discovery. The source of the signal was never identified, leading some to say it was aliens. But a new study suggests it wasn’t aliens at all—but rather a hydrogen cloud caused by comets.

This Timelapse Video of Radio Observatories is Just Breathtaking

With gold-plated space telescopes promising to discover distant worlds and unravel the deepest mysteries of the universe, radio astronomy can sometimes feel a bit passé. But lest you think the search for extraterrestrial intelligence is no longer sexy, a glorious new photo collection featuring radio observatories…

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The Many, Many Times Astronomers Mistook Mundane Phenomena for Aliens

The science world is all in a tizzy this week about the supposed discovery of an alien megastructure. It’s an intriguing theory, no doubt, but one deserving hefty amounts of skepticism. As we’ve learned before, inexplicable observations are all too often confused for aliens. Here are some classic examples.

New Scale Pinpoints Most Life-Friendly Alien Planets 

Researchers at the University of Washington’s Virtual Planetary Laboratory have devised a new habitability index for judging how suitable alien planets might be for life. The point of the exercise is to help scientists prioritize future targets for close-ups from NASA’s yet-to-be-launched James Webb Space Telescope