Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, star clusters, dust, gas, and dark matter, all bound together by gravity.

Front

How many galaxies are there in the universe?

Back

There are estimated to be over 2 trillion galaxies in the observable universe.

Front

What is the Milky Way Galaxy?

Back

The Milky Way Galaxy is the galaxy that contains our solar system and is classified as a spiral galaxy.

Front

What are the main types of galaxies?

Back

The main types of galaxies are 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 has an oval shape and is composed mainly of older stars.

Front

What is an irregular galaxy?

Back

An irregular galaxy is a type of galaxy that does not have a defined shape or structure.

Front

What is the difference between a spiral and an elliptical galaxy?

Back

Spiral galaxies have distinct spiral arms and younger stars, while elliptical galaxies are more rounded and contain older stars.

Front

What is dark matter?

Back

Dark matter is a form of matter that does not emit light or energy, making it invisible, but it exerts gravitational effects on visible matter.

Front

What role do galaxies play in the universe?

Back

Galaxies are the building blocks of the universe, containing stars, planets, and other celestial bodies, and they help in the formation of new stars.