Galaxies

Front

What is a star?

Back

A star is a body made of gas, held together by gravity, that generates light through nuclear fusion.

Front

What are galaxies composed of?

Back

Galaxies are composed of stars, dust, and gas held together by gravity.

Front

How are galaxies alike?

Back

They all have stars, gas, and dust.

Front

What type of galaxy has little gas and old stars?

Back

Elliptical galaxy.

Front

What is an irregular galaxy?

Back

An irregular galaxy is a type of galaxy that does not have a distinct regular shape.

Front

What is a spiral galaxy?

Back

A spiral galaxy is a type of galaxy characterized by its spiral arms and a central bulge.

Front

What is an elliptical galaxy?

Back

An elliptical galaxy is a type of galaxy that is shaped like an ellipse and contains older stars.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our solar system.

Front

What is a nebula?

Back

A nebula is a giant cloud of gas and dust in space, often the birthplace of stars.

Front

What role does gravity play in galaxies?

Back

Gravity holds galaxies together, keeping stars, gas, and dust in orbit.