Formation and Motion of Galaxies

Front

What is a light-year?

Back

The distance light travels in 1 year.

Front

What role does gravity play in a galaxy?

Back

Gravity is responsible for the motion of the objects within a galaxy.

Front

What type of galaxy is characterized by a smooth, featureless shape?

Back

Elliptical galaxy.

Front

What is the current state of the Universe?

Back

The Universe is continuing to expand.

Front

What are the main components involved in the formation of the solar system?

Back

Dust and gas pulled together by gravity.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular galaxies.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.

Front

How do galaxies move in relation to each other?

Back

Galaxies can move towards or away from each other due to gravitational forces.

Front

What is dark matter?

Back

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