Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

The rocket-powered Gracie will conduct five hops during its short lunar stay, including one into the depths of a shadowy ...

Wolf 359’s extreme radiation and frequent X-ray flares make life-sustaining atmospheres on nearby planets highly unlikely, ...

The powerful Webb with its incredible sensitivity observed dust grains the size of bacteria, which will eventually coalesce ...

This week sees a special stargazing event, as as up to six planets will be visible in a line in the night sky.

Europa Clipper - one of the most advanced spacecraft ever sent to another planet - aims to explore Jupiter's icy moon ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

NASA is fueling an exciting future for citizen science by funding 25 new projects across diverse fields, from astrophysics to ...

Astronomers aimed the Very Large Telescope in Chile at a nearby exoplanet and discovered jet stream winds blowing nearly 80 times faster than any seen here on Earth, and the fastest of their kind ever ...

During the first nights of February, the crescent moon should line up with the planets as well. The planets are spread far apart in the solar system, AccuWeather wrote. Although it can be hard to see ...

"This signal shows us that there is a very fast, supersonic, jet wind around the planet's equator." Fast is an understatement. At an incredible 7.5 to 7.9 kilometers ... speeds in our Solar System, ...