Recent observations suggest that scientists have identified potential microbial fingerprints in the atmospheres of other ...

NASA uses a seven-step “confidence of life detection” scale to verify alien discoveries, requiring multiple layers of ...

Is 3I/Atlas an alien spacecraft or just a really interesting rock hurling through the cosmos? That debate has been raging ...

Scientists have been searching for radio signals from hypothetical alien civilizations using radio telescopes for decades.

The persistent human fascination with extraterrestrial life and the fundamental question of whether we are alone in the universe has driven countless investigations, theories, and debates throughout ...

Radio astronomy opened up the universe for scientists. They could map new elements across galaxies and also search for ...

About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 ...

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed like the latest in an endless cycle of tantalizing hints followed by pleas ...

The evidence that an ocean-covered moon orbiting around Saturn could support life just got a little stronger. Enceladus, a small moon harboring a vast ocean beneath its icy surface, has long been ...

A new study used mathematical formulas and demonstrated that it’s highly unlikely life began on Earth. Instead, the researcher points to panspermia, a theory that life or the ingredients for life came ...