Planetariums

A planetarium is a fun place to learn about space. It has a big round ceiling called a dome. A special projector shines stars, planets, and galaxies on the dome. When the lights go out, it feels like you are looking at the real night sky.

How They Work

A planetarium has a big machine in the middle or around the room. This machine shoots light to make tiny dots that look like stars. Many planetariums now use digital projectors and computers. The show can take you on a trip to Mars or zoom into a galaxy. You just sit back and look up.

Why They Matter

Planetariums help people learn about the sky in any weather. You do not need a clear night to see the stars. Teachers bring students to learn about planets, constellations, and space travel. Some planetariums also have science shows about dinosaurs or the ocean. They make learning about space exciting.

Fun Facts

• The first modern planetarium opened in Germany in 1923.
• The biggest planetarium in the world is in China.
• Some planetarium seats lean all the way back so you can see the whole dome.

Did You Know?

A planetarium can show you what the sky looked like thousands of years ago or what it will look like in the future.