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We Can't Find Aliens Because They're All Extinct

Alien life may well have flourished many times around our galaxy, and even our solar system. Why haven’t we found it, though? It probably lived and died long before we were around, and didn’t last long enough to evolve into complex multicellular forms. A new study published by scientists and researchers at the Australian National University suggests that near-universal early extinction of other lifeforms in our universe — at a cellular and microbial level — is due to the relatively rapid change of the climates on planets like Venus and Mars.


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 emphasise 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.


Everything You Need To Know About Cassini's Final Enceladus Flyby

An important chapter in our exploration of the solar system concludes tomorrow, when NASA’s Cassini probe makes its final close flyby of Enceladus, an icy moon orbiting Saturn with a global ocean beneath its surface. Cassini has already collected samples to determine if Enceladus’ seawater might be habitable — but we still have some unfinished business with this tiny Saturnian satellite.


The Next Alien Film, Covenant, Will Be Shot In Sydney (With Two More To Follow)

Well, hopefully two more. But definitely one, with director Ridley Scott confirming last week that Sydney would play host to Prometheus follow-up Alien: Covenant.


Most Earth-Like Worlds Haven't Been Born Yet

With NASA’s Kepler mission still turning up cosmic wonders, and a slew of exoplanet-hunting scopes on deck, the chance of finding a second Earth has never seemed higher. And yet, time may be against us when it comes to meeting our squishy galactic brethren: according to a new theoretical study, 92% of Earth-like worlds haven’t been born yet.


What Are The Odds Of An Alien Megastructure Blocking Light From A Distant Star?

A strange star located 1500 light-years from Earth is exhibiting strange flickering behaviour that’s leading some scientists to speculate that an alien megastructure is blocking the light. But what would such a structure be exactly and how likely is it that the Kepler space telescope has actually spotted one?


Aliens Or Not, There's Still A Lot To Discover In NASA's Kepler Data

This week, the internet worked itself into a frenzy over the possibility that we’ve found an alien megastructure. But whether or not there’s a Dyson sphere buried in the Kepler data, the discovery of a strange, flickering star is very interesting.


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 scepticism. As we’ve learned before, inexplicable observations are all too often confused for aliens. Here are some classic examples.


SETI: Snowden Should Stick To Human Affairs And Let Us Figure Out How To Find Aliens

Edward Snowden may know a thing or two about encryption, but his remarks on encrypted alien signals aren’t sitting quite right with SETI. According to those in the business of searching for extraterrestrials, Snowden should probably keep his security advice limited to human affairs.


Edward Snowden: Advanced Encryption May Stop Us Communicating With Aliens

On Friday, Neil deGrasse Tyson welcomed Edward Snowden to his StarTalk podcast. Along with the usual conversations about privacy and government, Snowden had another important warning to provide: encryption may hurt our abilities to see, or be seen by, extraterrestrials.


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