Astronomers have discovered a panoply of new moons orbiting Saturn, bringing the ringed gas giant's total up to 274 moons—far ...

Jupiter’s four largest moons – Io, Europa ... Regular moons tend to orbit their planets in nice, circular orbits around the equator. Irregular moons typically orbit in big ovals further ...

What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) ...

Irregular moons typically follow distant and retrograde (backwards) orbits and have greater inclinations (related to the tilt of an orbit). Another difference is that while regular moons emerged as ...

Their discovery ... I don't think Jupiter will ever catch up," Ashton said. All of the new moons are irregular moons. Irregular moons follow wide, elliptical orbits and are often highly inclined.

Ellipses are defined as curves that surround two focal points. At any point on the ellipse, the sum of the distance to both ...

a decently big chunk of rock that orbits Earth. But centuries ago the first telescopic observations of other planets revealed that many have moons as well; Jupiter has four giant, easily seen ...

Saturn has surpassed Jupiter, which has 95 known moons, with the new sightings. Uranus (28), and Neptune (16) are still ...

Jupiter has 95 known moons, Uranus 28 ... But as long as they have trackable orbits around their parent body, the scientists who catalog objects in the solar system consider them to be moons.

This Jan. 2, 2010 image made available by NASA shows the planet Saturn, as seen from the Cassini spacecraft. THE CANADIAN PRESS/NASA/JPL-Caltech/Space Science Institute via AP VANCOUVER — Canadian and ...

With the new spottings, Saturn has usurped Jupiter which has 95 known moons, while Uranus (28) and Neptune (16) remain third ...