NASA's most eye-catching hints of alien life on Mars and a distant exoplanet left headlines breathless in 2025, but a major new survey of hundreds of astrobiologists suggests most experts do not yet ...
In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...
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What would proof of alien life look like? Here's what scientists are really looking for
In September 2025, NASA reported the first tantalising hints of a potential biosignature – a scientifically testable indicator of past or present extraterrestrial life – on the surface of Mars. The ...
It may seem like we are on the verge of discovering alien life. In 2025, a press release stated that we have the “strongest hints yet” of extraterrestrial life on the exoplanet K2-18b. And when ...
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