How fast is Earth moving? The sun doesn't sit idly in the center of these ellipses at equal distance from their farthest points. It actually follows its own tiny elliptical orbit around what is ...

The risk of impact is likely to drop to zero as observations of Asteroid 2024 YR4 continue.

Astronomers mistook a car SpaceX blasted into space years ago as an asteroid. The brief mix-up highlights the sometimes ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

On Mercury, the hot days are also incredibly long. Because Mercury rotates so slowly — once every 58 Earth days — in some places, the sun can appear overhead for weeks at a time. A year on ...

Planetes means “wanderers” in ancient Greek, referring to the fact that as the planets and Earth orbit the sun, those dots of light in the sky appear to move relative to the background stars.

An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an impact thousands of years ago.

SpaceX is scheduled to launch its Maxar 3 mission, with two high-resolution commercial satellites on board, from the Kennedy ...

On January 18, the team at Firefly carried out Blue Ghost’s first engine burn, firing up the lander’s thrusters and main ...

A chunk of space rock that visited near Earth's orbit last year was widely called a "mini-moon," a nickname that was more ...