NASA's hunt for alien life may be undermined by its own instruments, according to a group of leading astrobiologists who warn that current tools and mission designs are likely missing subtle, but ...

A new study suggests Mars could help scientists understand how alien worlds evolve by showing how a once warmer, wetter ...

NASA engineers spun next-gen Mars helicopter blades past Mach 1 without shattering them. See how JPL unlocked the future of alien flight.

A photo of a three-sided Martian "pyramid" has sparked discussions on potential advanced life on the Red Planet. Evidence of alien life or cosmic pyramid scheme? A documentary filmmaker sparked a ...

NASA's Curiosity rover has photographed extraordinary spiderweb-like formations on Mars that scientists believe could hold the key to ancient life on Mars ...

A new batch of declassified Pentagon UFO materials is fueling fresh public fascination — but files still do not confirm extraterrestrial life.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...