Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles ...

The astronauts and cosmonauts aboard the International Space Station spent their first full week as Expedition 74 crewmates.

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

Images from NASA's Galileo mission reveal a tantalizing starburst-like feature. Scientists call it a "wall demon." ...

That’s the question at the center of Pop Mech ’s new story, “ Aliens Probably Exist—But They’re Staying Silent For a Reason, ...

The Geminids, considered one of the best and most reliable annual meteor showers, is predicted to peak Dec. 12-13.

James Webb finds a hot planet that is tidally locked with its parent star, is coated with a thick atmosphere of volatile ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

Intuitive Machines will work with Telespazio on their planned lunar satellite networks to ensure interoperability and improve ...

Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.

NASA has lost contact with its MAVEN spacecraft that has been orbiting Mars for more than a decade. Here's what we know.

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...