The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new ...

Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

Steven Spielberg's claims of alien visits to Earth spark debate among scientists, who stress the lack of credible evidence ...

Something is absorbing light on the surfaces of Pluto and Saturn’s moon Titan, and figuring out what it is could be crucial ...

Every second, hypervelocity collisions may be blasting tiny flecks of Earth into space. Some of those grains, small enough to ...

A biocontainment facility designed to protect Earth from potentially hazardous biotic contaminants from space should be part ...

A provocative study suggests that Jupiter’s frozen moon Europa may not only be hospitable, but that life from Earth could be ...

Scientists have discovered an enigmatic substance on the surfaces of Titan and Pluto, sparking intrigue about the complex ...

Sugar Season 2 opens with grief, unanswered questions, and a new missing-person case that gives John Sugar a reason to keep moving forward.

As humanity prepares to bring back material from the Moon, Mars, and potentially other worlds, a new question is moving from ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...