On December 19, this interstellar visitor with its peculiar composition offers a glimpse into the makeup of celestial bodies ...

New models suggest Uranus and Neptune may be far rockier than long believed, reshaping theories of ice-giant interiors, ...

Astronomers have discovered a planet beyond the solar system that orbits its twin parent stars closer than any ever seen ...

Perihelion is the point at which an orbiting body is closest to the sun. The word comes from Greek and literally means around ...

As 2025 winds down, change is already in the air. Stoic Saturn and spiritual Neptune are both wrapping up long journeys ...

Life on Earth may have begun with a gift from a comet. Its existence was once threatened by an asteroid. Its future may ...

For the first time, scientists have continuously monitored a planet's escaping atmosphere over a complete orbit, revealing ...

In their desperate search for another Shadowsmith, the Zombies crew find themselves stranded on an abandoned observatory that drifts silently within ...

Far beyond the bright planets, in the dim outskirts of the Solar System, astronomers keep stumbling on objects that refuse to ...

Studied by astronomers for a brief moment, the C/2025 K1 ATLAS comet was spotted by telescopes as it split, providing a ...

The Geminids return with near-perfect viewing conditions, offering skywatchers up to 150 meteors an hour under dark December ...