Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around ...

In 1949, famed mathematician and physicist John von Neumann delivered a series of addresses at the University of Illinois, ...

Imagine the effects if each planet in the solar system replaced our Moon. Enough Senate Democrats vote with Republicans to ...

Our Moon is slowly drifting away from Earth, not just due to tidal friction as previously thought. New research suggests ancient planetary impacts and ...

Miranda, a small moon of Uranus, hides a feature so extreme that it defies most Earth-bound comparisons. Verona Rupes, a ...

Dust brought back to Earth by China's Chang'e-6 mission contains rare meteorite relics that could change our understanding of sources of water and other life-essential ingredients in our solar system.

The frigid conditions on the surface of Saturn's largest moon, Titan, allow simple molecules in its atmosphere to break one of the most fundamental rules in chemistry, a new study shows. According to ...

Planetary scientist Adeene Denton runs computer simulations to investigate Pluto, the moons of Saturn and other icy bodies in the solar system.

A retro-futuristic space truck. A nimble crustacean on wheels. A space-age dune buggy. One will win a multibillion-dollar ...