The mystery of whether microbial alien life might inhabit Enceladus, one of Saturn's 83 moons, could be solved by an orbiting space probe.

An Earth-like planet orbiting an M dwarf star discovery could cause a major shift in the search for life on other planets.

When Mars was a young planet, it was bombarded by ice asteroids delivering water and organic molecules necessary for life to emerge.

Researchers believe that this vent could serve as a natural laboratory and substantially inform the search for extraterrestrial life.

An Earth-like planet orbiting an M dwarf — the most common type of star in the universe — appears to have no atmosphere at all.

The lava caves, lava tubes and geothermal vents on the big island of Hawaiʻi have higher bacterial diversity than scientists expected

According to this scenario, life on Earth was originally based on RNA only, and DNA and protein enzymes evolved later.

Researchers have discovered 1.2-billion-year-old groundwater deep in a gold- and uranium-producing mine in Moab Khotsong, South Africa.

Using light-capturing proteins in living microbes, scientists have reconstructed what life was like for some of Earth’s earliest organisms.

Liquid water is an important prerequisite for life to develop on a planet. It could also exist for billions of years on planets.

At present, there is no other equipment that can detect minute amounts of bio-residue on a rock during the daytime. Biofinder can.

The space agency on Thursday announced a new study that will recruit leading scientists to examine unidentified aerial phenomena.

Planetary systems around binary stars may be very different from those around single stars and might point to extraterrestrial life.

Europa is a prime candidate for life in our solar system, and its deep saltwater ocean has captivated scientists for decades.

All life consists of the same chemical building blocks. These include peptides, which perform various completely different body functions.

Black holes are more than just massive objects that swallow everything around them—they're also one of the universe's biggest energy sources

A new open data nonprofit scientific initiative by Avi Loeb will use a network of telescopes, cameras and computers to scan for alien life

NASA wants standards for evaluating claims of extraterrestrial life to help the public judge if discoveries are believable or not