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.

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What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

Where is our solar system located in the Milky Way?

Back

Our solar system is located on one of the spiral arms of the Milky Way.

Front

How old is the Milky Way?

Back

The Milky Way is approximately 13.7 billion years old.

Front

What are the main types of galaxies?

Back

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

Front

What is an irregular galaxy?

Back

An irregular galaxy is a type of galaxy that does not have a distinct regular shape, often formed from the remnants of colliding 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 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 approximate number of stars in a galaxy?

Back

A galaxy typically contains millions or billions of stars.

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.