The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

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 ...

Steven Spielberg returns to alien territory in "Disclosure Day," a busy, wide-eyed and ultimately unsatisfying sci-fi blockbuster that shows the "Close Encounters of the Third Kind" and "War of the ...

A Stanford scientist says a new planetary model may explain why we have not found aliens yet, arguing that most small rocky ...

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 ...

Deep oceans of magma once sloshed about inside the crust of Mars, seismic measurements taken by NASA's InSight mission ...

We are not alone. RadarOnline.com can reveal four distinct alien life forms have been recovered from crashed UFOs, according to a former CIA-funded researcher. "People who have been involved in ...

Mars Perseverance rover found hundreds of complex carbon signatures in Jezero Crater mudstones - compelling evidence, but not ...

In September 2025, NASA announced that its Perseverance rover had discovered a potential biosignature, which is a substance or structure that might have a biological origin. A new paper, published in ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. For Ivy McKeehan, the visits began in childhood and never stopped. For Nathan Eastin, it was a ...