Updated measurements from NASA’s Juno spacecraft could help researchers better understand the planet's mysterious interior, ...

The solar system’s most giant planet is slightly less of a giant than scientists once thought. Jupiter, a planet so huge it could hold 1,000 Earths, is 8 kilometers less wide at its equator and 24 ...

Jupiter may be a bit more petite than expected, and that could have a big impact on how scientists model the mysterious ...