Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

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

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

A biologist specializing in invasive species has partnered with a former Pentagon strategist in pushing NASA to construct a ...

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.

Once small enough, these technograins might gain a trip out of its host solar system by a solar wind that overcomes the star's gravity holding it back. These motes of dust are then free to roam the ...

Alien civilizations may have left traces. We just may not have been looking in the right place.

The Donald Trump administration has released numerous files about reported UFO sightings as well as bizarre claims and reports about the surface of the Moon ...

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

In Yellowstone National Park, ravens have demonstrated remarkable intelligence by devising a unique method for locating food.