Pluto's 2006 status change from planet to dwarf planet is still a sore subject for many, including a fourth grader in Tampa, ...

A lonely world drifting through space with no star to orbit is gorging on gas and dust at a staggering pace, swallowing ...

For several days this month, Saturn, Mars, and Mercury appear just degrees apart before sunrise—close enough to watch their ...

Astronomers have discovered icy rocks in the outer solar system that seem to defy the laws of physics, raising questions ...

Planets, like those in our solar system, form in a bottom-up process where small bits of rock and ice clump together and grow larger over time. But the heftier the planet, the harder it is to explain ...

Planet Labs is leveraging its Earth-imaging platform to become a provider of actionable artificial intelligence (AI)-powered analytics.