So exactly how many solar system moons have we ... uncertainty about how many small-body satellites are really out there. —Why can we sometimes see the moon in broad daylight?

Astronomers have found evidence for what might be a planet with about half the mass of the Moon orbiting the pulsar ... have ever detected outside our Solar System. The pulsar and the objects ...

A huge haul of 128 newfound satellites might be a hint of past collisions in the planet’s orbit, or something else.

The impact stands out despite the fact that Mimas is one of the most heavily cratered bodies in the solar system, with overlapping impacts covering the surface. The small moon is composed of ...

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

The discovery points to what astronomers have thought for decades, that Saturn's rings were caused by a massive collision ...

The solar system’s smallest planet will be relatively easy ... On March 1, the position of the crescent moon will aid in spotting Mercury, according to Space.com. The easiest way to find Mercury ...

If you find Jupiter, you’ll likely see four small dots to the side of the gas giant: they are the Galilean moons, four of the 95 natural satellites around the Solar System’s largest planet.

After hours of uncertainty, officials from the Houston company said there are clues that the spacecraft is on its side, which could limit the mission’s scientific accomplishments.