Types of galaxies

Front

What are the three main types of galaxies?

Back

Spiral, Elliptical, and Irregular.

Front

What is a spiral galaxy?

Back

A type of galaxy characterized by its spiral arms and a central bulge, containing young stars, gas, and dust.

Front

What is an elliptical galaxy?

Back

A type of galaxy that is more rounded or oval in shape, containing older stars and very little gas and dust.

Front

What is an irregular galaxy?

Back

A type of galaxy that does not have a distinct regular shape, often containing young stars and significant amounts of gas and dust.

Front

What is a nebula?

Back

A large cloud of gas and dust in space where stars are formed.

Front

What galaxy do we live in?

Back

The Milky Way, which is a spiral galaxy.

Front

What type of galaxy is characterized by having little gas and old stars?

Back

Elliptical galaxy.

Front

What is the significance of gas and dust in galaxy formation?

Back

Gas and dust are essential for star formation; they provide the material needed for new stars to form.

Front

How do stars form in a nebula?

Back

Stars form when regions within a nebula collapse under gravity, leading to the formation of dense cores that ignite nuclear fusion.

Front

What is the difference between a barred spiral galaxy and a regular spiral galaxy?

Back

A barred spiral galaxy has a central bar-shaped structure made of stars, while a regular spiral galaxy does not.