Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The solar system is our cosmic neighborhood, made up of the sun and everything that orbits it — planets, moons, asteroids, comets, and even dust and gas. The order of the planets in the solar ...

The National Science Foundation’s Daniel K. Inouye telescope debuted a close-up of the sun captured by its new, ...

“The instrument is, so to speak, the heart of the solar telescope, which is now finally beating at its final destination,” ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

A newly released image of the sun captured ... at a scale of 6.2 miles (10 kilometers) per pixel. These blemishes mark areas of intense magnetic activity, where solar flares and coronal mass ...