From the tallest cliff in the solar system to its largest impact basin, geological processes on other worlds are very similar to those on our own planet.
Earth currently has a second moon - but it won’t stay long.
This Hubble Space Telescope image of Saturn and a few of its moons shows how hard it can be to spot the gas giant’s tiny orbiting companions.
NASA / ESA / Hubble
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 looks a lot like the near side.
NASA's Scientific Visualization Studio
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.
A moon shadow on Jupiter, the red planet now has a dozen more moons added to the list or such orbiting bodies.
NASA/JPL-Caltech/SwRI/MSSS
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.
Artist’s impression of a cryobot and submarine in the ice on Jupiter’s Europa.
NASA/JPL
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.
Charon has a huge fracture system, unlike anything seen on Pluto.
NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute