The provisionally named S/2025 U1 is so small it had gone unnoticed by probes and telescopes for the past 40 years.

The looming cancellation of RPS has placed the highest-priority planetary science mission of the coming decade at risk. In ...

Ceres is 590 miles (950 km) across and was discovered in 1801. It is the closest dwarf planet to the sun and is located in ...

What else is hiding in the brightness of the outer planets? That was made more pressing by the James Webb Space Telescope’s Near-Infrared Camera catching a dim, six-mile-wide moon around Uranus a ...

At just about 10 km (6 miles) in diameter, S/2025 U1 is incredibly small as far as moons go; it’s so tiny that Voyager 2, ...

Using NASA’s James Webb Space Telescope, a team led by the Southwest Research Institute (SwRI) has identified a previously ...

ANU Astrophysicist and Cosmologist Dr Brad Tucker discusses a newly discovered moon, “smaller than Sydney” orbiting Uranus.

Aug. 21 (UPI) -- SpaceX launched an experimental space plane for the U.S. Space Force from Florida late Thursday. A Falcon 9 ...

Scientists may have found the first planet ever detected around our closest “solar twin,” a star called Alpha Centauri A, the ...

Astronomers using the powerful eye of the James Webb Space Telescope have spotted a previously unknown moon whirling around ...

We’re learning from our own deep space signals where to look for signs of extraterrestrial life.

Half a dozen planets - Mercury, Venus, Jupiter, Saturn, Uranus and Neptune - will put on a dazzling display in the sky on ...