Front

Which galaxy do we live in?

Back

Milky Way

Front

The Milky Way is a _________ galaxy.

Back

spiral

Front

Which galaxy has older, redder stars?

Back

elliptical

Front

Which galaxy has large amounts of gas and dust and many younger stars?

Back

irregular

Front

What diagram categorizes stars?

Back

Hertzsprung Russell Diagram

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the universe?

Back

The universe is the totality of space, time, matter, and energy, including all galaxies, stars, and planets.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular.

Front

What is a spiral galaxy?

Back

A spiral galaxy is a type of galaxy characterized by its spiral arms that wind outward from the center.

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 with little gas and dust.