Moons

A subsatellite, also known as a submoon, or moonmoon, or a schmoon, is a "moon of a moon" or a hypothetical natural satellite that orbits the moon of a planet.It is inferred from the empirical study of natural satellites in the Solar System that subsatellites may be rare, albeit possible, elements of planetary systems.

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Mars may have made its 2 moons by ripping an asteroid apart

The Moons of Mars May Actually Be Fragments of Something Much Bigger

New Supercomputer Simulation Explains How Mars Got Its Moons

An Asteroid’s Destruction May Have Given Mars Rings, Then Moons

Making Mars’ Moons: Supercomputers Offer ‘Disruptive’ New Explanation

Asteroid pieces brought to Earth help reveal how our solar system's planets and moons grew

Planetary Researchers Examine Tidal Effects on Interiors of Planets and Their Moons

Jupiter's moons hide giant subsurface oceans − Europa Clipper is one of 2 missions on their way to see if these moons could support life

Meteor Strikes Unveil Hidden Water Flows on Moons and Asteroids

What next for NASA's Europa Clipper? The long road to Jupiter and its moons

Tiny Black Holes Could Lurk Inside Asteroids, Moons, or Even Planets Like Ours

Some of Uranus' moons might be able to support life. Here's what a mission might reveal

Why Do So Many Tiny Asteroids Have Moons?

Massive, Ancient Asteroid May Have Smashed Into One of Jupiter's Moons

Wait a Minute. Why Don't Any of The Solar System's Moons Have Rings?

'Fireflies' help NASA map radiation around Jupiter and its moons

Earth has 7 strange quasi-moons — and you could name one of them

Why do some planets have moons? A physics expert explains why Earth has only one moon while other planets have hundreds

How many moons and moonmoons could we cram into Earth's orbit?

Earth's quasi-moons, minimoons, and ghost moons