The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

Back when the Earth was crawling with trilobites and other strange shelled creatures, our planet may have had a ring just like Saturn's. This ancient ring system is thought to have formed about ...

Astronomers have just discovered 128 new moons orbiting Saturn, bringing its total to a staggering 274. This discovery not ...

Astronomers think that the rings are the remnants of moons that got too close to Saturn and were torn apart by its gravity.