Galaxies and the Universe

Front

What is a galaxy?

Back

A large grouping of stars, dust, and gas bound together by gravity.

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What type of galaxy is the Milky Way?

Back

Spiral galaxy.

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What is an elliptical galaxy?

Back

A type of galaxy that is smooth and featureless, often shaped like an elongated sphere.

Front

What is an irregular galaxy?

Back

A galaxy that does not have a distinct regular shape, often chaotic in appearance.

Front

What is the closest galaxy to the Milky Way?

Back

The Andromeda Galaxy.

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What is the main component of a galaxy?

Back

Stars, gas, dust, and dark matter.

Front

What is the role of gravity in galaxies?

Back

Gravity binds the stars, gas, and dust together, keeping them in orbit around the galaxy's center.

Front

What is a nebula?

Back

A giant cloud of gas and dust in space, often the birthplace of stars.

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What is cosmology?

Back

The scientific study of the large scale properties of the universe as a whole.

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What is dark matter?

Back

A form of matter that does not emit light or energy, making it invisible, but exerts gravitational effects.