An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of ...

Many have watched recently released UFO videos, but most still think the government knows more than it is saying.

In the 21st century, the theories regarding the existence of aliens refuse to dial down. Now, the recently resurfaced NASA photo of Martian planet has gone viral on various social media ...

The first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens flying around in saucer-shaped spacecraft. In fact, the life that could be – emphasis ...

Study pinpoints which rocky worlds could hang on to a life-supporting atmosphere ...

The International Raëlian Movement, also know as Raëlism, is a UFO religion that was founded in France in the 1970s. It is still practiced today, with its strongest followings in parts of Asia, Africa ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...

Add Yahoo as a preferred source to see more of our stories on Google. Tardigrades—a type of invertebrate also known as water bears—are the only animals observed to survive the intense radiation and ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...