Did a flying saucer just land at NASA? It sure looks like it.

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

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

NASA has received one of the most unusual-looking pieces of hardware ever associated with the Artemis III program, and ...

Titan, Saturn's largest moon, is home to vast lakes and seas - not of water, but of liquid methane and ethane. In this video, we explore NASA's revolutionary TitanAir concept, a futuristic seaplane ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

The Transiting Exoplanet Survey Satellite (TESS) revealed a distant planet located 40,000 light-years away using microlensing for the first time.

The Pentagon released over a hundred newly declassified files related to UFOs (now officially referred to as Unidentified Anomalous Phenomena, or UAP) last month, including a handful of pages and ...

Harvard astrophysicist Avi Loeb argues 3I/ATLAS and other interstellar objects may hint at alien technology, drawing fame, funding, and fierce criticism.

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 ...

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

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...