Earth’s neighbor still has secrets that science is trying to figure out, and one of them is potential signs of life.

Science: Nikku Madhusudhan (IoA) Claims about possible extraterrestrial life on K2-18b and Mars generated worldwide ...

Is there life on Mars? That’s the wrong question. Every time scientists from NASA, the European Space Agency, or any other ...

A mysterious tripod-like object captured by NASA's Curiosity rover on Mars has sparked debate about extraterrestrial life, ...

Scientists propose a universal test that could detect alien life without assuming it resembles any biology found here on ...

A strange ‘jellyfish-like’ object spotted in a NASA Curiosity rover image from Mars has sparked online speculation.

Add Yahoo as a preferred source to see more of our stories on Google. A rocky planet orbiting in the habitable zone of a sun-like star may look like a perfect place for life to thrive — but not if ...

NASA is regularly flying a robotic helicopter around Mars while a car-sized rover below zaps rocks with a laser as it searches for potential signs of past life ...

An alien weapon has been found on Mars, according to a top UFO researcher. RadarOnline.com can reveal an image taken by ...

A NASA Curiosity rover image has sparked claims of an 'alien missile' on Mars, though NASA attributes such formations to natural geological processes.

A thin atmosphere and other factors have left Mars' soil in rough shape, but the quest continues for signs of life, even if it's extinct. NASA/JPL-Caltech/MSSS What if we aren’t alone in the universe?