ELI5: Explain Like I'm 5

Armillary sphere

An armillary sphere is a fun way to learn about the Earth and space! It's a model of our planet and the things around it, like the sun, moon, and stars. Imagine a big metal ball that looks like the Earth. It has rings around it, kind of like a hula-hoop. These rings show important things like the equator and the different time zones.

The armillary sphere helps us understand how the Earth moves in space. It can show us how the Earth spins on its axis (like a top!) and how it revolves around the sun. There are also pointers attached to the rings that show us where different stars and planets are in the sky.

Scientists and astronomers use armillary spheres to help them make calculations and predict where things will be in the sky. It can also be a fun toy for kids who want to learn about space and astronomy!