Scientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 ...

Scientists have identified Acidalia Planitia on Mars as a potential hotspot for alien life, with conditions ideal for ...

Thousands of cattle have been killed and carefully harvested for their sex organs for at least half a century, leaving no ...

Scientists have found what seems to be the oldest direct evidence of hot water flowing on Mars during its ancient past. The ...

Alien life is "definitely" monitoring Earth's airbases, according to a British ufologist and film-maker after recent footage ...

From Roswell to the USS Nimitz, sightings and evidence abound. How do we investigate UFO reports—and are they real in the ...

Scientists have identified a region on Mars that could support living organisms, potentially bringing us a step closer to ...

Scientists have found microorganisms crawling over a sample retrieved from the 200 million-mile-distant asteroid Ryugu. But ...

The Mars meteorite 'Black Beauty' suggests there used to be hot water on the Red Planet. Scientists have found what seems to be the oldest direct evidence of hot water flowing on Mars during its ...

By analyzing data from various Mars missions, the team has identified a subsurface zone, between 4.3 and 8.8 kilometres deep, ...

Claims of UFOs at nuclear sites spark debate as ex US military official suggests aliens send a message about nuclear weapons.

The U.S. government has received more than 700 reports of unexplained phenomena but have found no proof of extraterrestrial ...