Caliban: A Wobbly Moon of Uranus!

Caliban is a moon, which means it's a rocky or icy body that orbits a planet. In this case, Caliban orbits the giant planet Uranus! But Caliban is a bit unusual.

Imagine a toy top spinning, but instead of spinning straight up and down, it's tilted way over. That's kind of how Caliban orbits Uranus, making it a very peculiar moon in our solar system. It's not like our Moon that orbits Earth neatly!

Caliban is a small moon. Its diameter is only about 72 kilometers, which is like the length of about 10 school buses lined up end-to-end! That's tiny compared to Earth, which has a diameter of about 12,742 kilometers. So, Caliban is much, much smaller than our home planet. It's more like a big potato floating in space than a giant ball like Earth.

Caliban takes a long time to go around Uranus. It takes about 588 Earth days for Caliban to complete one full trip around its planet. That's almost two whole Earth years! What's really strange is that Caliban orbits Uranus in a way that's very tilted compared to how most moons orbit. It's like it's doing a sideways dance around the giant planet, making scientists scratch their heads.

Scientists think Caliban is made of dark, rocky material. It's not shiny like some other moons. Because it's so far away from the Sun and Uranus, it's very, very cold there. It's so dark that it's hard for telescopes to see it clearly. It's like trying to spot a tiny, dark pebble in a huge, dark room!