Earth currently has a second moon - but it won't stay long.
Astronomers have found 20 new moons around Saturn, and will keep finding more as technology improves.
NASA's Europa Clipper mission just got the green light - here's what it could achieve.
Titan may host primitive lifeforms and could tell us how life arose on our own planet.
Whether anything could live in Europa's subsurface ocean depends on what kind of salt it contains. Now scientists have found out.
Astronomers have found the first observational evidence for a disc of material around a giant young planet at a distant star. It's a place they think moons can form.
The far side of the Moon sees its share of sunlight – it's dark only in the sense that it's mysterious because it's never visible from Earth. Here's why.
Jupiter now has at least 79 moons, the most for any known planet. But where did these newly discovered moons come from?
Titan is more than a billion kilometres from our Sun but occasionally it's shadow can be seen here on Earth, with the right technology. That's what scientists gathered in Western Australia to observe.
We could be exploring the oceans of Jupiter's and Saturn's icy moons in a couple of decades. Here's what we need to work out.
A new theory could change our understanding of the moons in our solar system – and the genesis of life itself.
As the list of known planets beyond our solar system grows, the search for their moons is intensifying. One reason: they might hold the key to finding life elsewhere in the universe.
Pluto's moon Charon seems to have had a violent past, with icy volcanoes leaving huge fractures.
Space scientists have a busy decade ahead with plans to visit Jupiter, Mars, Mercury and other interplanetary bodies all on the cards.
Why the Breakthrough Listen project is a step in the right direction in our hunt for life beyond Earth.