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Father-daughter team decodes 'alien signal' from Mars that stumped the world for a yearA father and daughter team based in the U.S. have decoded a mock "alien signal" beamed from ESA's ExoMars Trace Gas Orbiter a year ago — but the meaning of the extraterrestrial message remains a mystery.
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Alien civilizations are probably killing themselves from climate change, bleak study suggestsAstrophysicists estimate that any exponentially growing technological civilization has only 1,000 years until its planet will be too hot to support life.
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'Space trash' will lead us to intelligent aliens, Harvard astrophysicist Avi Loeb saysThe long-sought evidence of alien life could be lurking in Earth's oceans, says Harvard astrophysicist Avi Loeb. Here is his plan to find it.
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Infamous 'Wow! signal' that hinted at aliens may actually be an exceptionally rare cosmic eventThe source of a supposed alien broadcast that made researchers go "Wow!" may instead have been the result of a remarkably rare cosmic event, a new study suggests.
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SETI searches for alien life in over 1,000 galaxies using unexplored radio frequenciesAlthough no aliens were found, the results have helped constrain expectations of possible alien transmitter power.
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If alien life exists on Europa, we may find it in hydrothermal ventsIf there's life on Jupiter's moon Europa or Saturn's moon Enceladus, it could have a network of deep-sea hydrothermal vents to thank for its existence, new research suggests.
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7 potential 'alien megastructures' spotted in our galaxy are not what they seemScientists recently identified seven stars in the Milky Way that could potentially be gigantic alien structures called Dyson spheres. New research proposes an alternative explanation: Those are just cosmic "hot DOGs" in disguise.
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What could aliens look like?The search for alien life is one of humanity's greatest missions, but it may look nothing like anything we've seen on Earth.
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32 strange places scientists are looking for aliensFrom planets and moons in our solar system to dying stars and parallel universes, here are some of the far-out places scientists are searching for alien life.
