Galaxies

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

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 name of our galaxy?

Back

The Milky Way.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

What are the three main types of galaxies?

Back

The three main types of galaxies are spiral, elliptical, and irregular.

Front

What is an elliptical galaxy?

Back

An elliptical galaxy is a type of galaxy that has an ellipsoidal shape and lacks a distinct structure.

Front

What is an irregular galaxy?

Back

An irregular galaxy is a type of galaxy that does not have a defined shape or structure, often formed from the collision of other galaxies.

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 dark matter?

Back

Dark matter is a form of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.

Front

What is the significance of the Andromeda Galaxy?

Back

The Andromeda Galaxy is the nearest spiral galaxy to the Milky Way and is on a collision course with it.