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

What are the three main types of galaxies?

Back

The three main types of galaxies are Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies.

Front

What characterizes an irregular galaxy?

Back

An irregular galaxy has no defined shape or structure, often appearing chaotic in form.

Front

What is the closest large spiral galaxy to the Milky Way?

Back

The closest large spiral galaxy to the Milky Way is the Andromeda Galaxy.

Front

What force is responsible for pulling stars together in galaxies?

Back

Gravity is the force that pulls clusters of stars together in most galaxies.

Front

What is a spiral galaxy?

Back

A spiral galaxy is characterized by its spiral arms that wind outward from the center, containing stars, gas, and dust.

Front

What is an elliptical galaxy?

Back

An elliptical galaxy is a type of galaxy that has an ellipsoidal shape and lacks the distinct features of spiral galaxies.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our Solar System, characterized as a barred spiral galaxy.

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

How do galaxies form?

Back

Galaxies form from the gravitational collapse of gas and dark matter in the early universe, leading to the coalescence of stars and other matter.