NASA has responded to speculation that mysterious interstellar object 3I/ATLAS is actually an alien starship preparing to invade Earth.

NASA has responded to claims – popularized by Harvard professor Avi Loeb – that the interstellar object 3I/ATLAS is a ...

Curiosity is exploring Mars’ boxwork terrain, where ridges and hollows may have formed from cementation and erosion. The ...

Astrophysicist Avi Loeb, the former chairman of Harvard's Department of Astronomy and current head of Harvard's Galileo Project, which searches for ...

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas ...

For decades, the search for alien intelligence has revolved around the question: if someone out there is listening, how could ...

WASHINGTON -- NASA has agreed to search its archives once again for documents on a 1965 UFO incident in Pennsylvania, a step the space agency fought in federal court. The government has refused to ...

CAPE CANAVERAL, Fla. (AP) — Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient water world, scientists reported Wednesday.

When NASA discovers something strange on Saturn's biggest moon, experts investigate if aliens feeding on the electric atmosphere could be the culprit. The disturbing evidence points to a grisly ...

The newly arrived SpaceX crew that docked with the International Space Station Sunday morning was greeted by both human and foreign faces. Crew-9 commander Nick Hague donned a grey alien mask inside ...

Even astronauts have a sense of humor, as shown during NASA's Crew-10 docking on the International Space Station (ISS), when they were met by an "alien" early Sunday morning. Russian cosmonaut Ivan ...