Front

What is the distance from the Sun to the Earth?

Back

8.4 light-minutes.

Front

What unit of measurement do astronomers use for distant objects?

Back

Light Years.

Front

What type of galaxy is the Milky Way?

Back

Spiral galaxy.

Front

What holds galaxies together?

Back

Gravitational Attraction.

Front

What type of galaxy is characterized by an oval shape?

Back

Elliptical galaxy.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter.

Front

What is the closest star to Earth?

Back

Proxima Centauri.

Front

What is a light-year?

Back

The distance that light travels in one year.

Front

What are the three main types of galaxies?

Back

Spiral, Elliptical, and Irregular.

Front

What is the center of a galaxy typically composed of?

Back

A supermassive black hole.