The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our Solar System well organized and ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

The moderate tilts and slightly elongated paths of these planets — long considered a mystery — could be the result of a ...

Massive object passing through solar system is a better explanation for nature of orbits of Jupiter, Saturn and Neptune ...

Jane Huang, an assistant professor of astronomy, grew up in Chicago, but has no strong feelings on whether New York or her ...

Discover what the Hubble Outer Planet Atmospheres Legacy program has learned about the outer planets, including Jupiter, ...