Front

What is the movement of galaxies away from us called?

Back

Redshift

Front

What force keeps planets in orbit around the sun?

Back

Gravity

Front

Which section of the electromagnetic spectrum can we see?

Back

Visible Light

Front

Which electromagnetic wave has the lowest energy?

Back

Microwave

Front

What is the term for the phenomenon where light shifts to longer wavelengths as objects move away?

Back

Redshift

Front

What is the term for the phenomenon where light shifts to shorter wavelengths as objects move closer?

Back

Blueshift

Front

What is the universe doing according to the Big Bang theory?

Back

Expanding

Front

What is the name of the galaxy that contains our solar system?

Back

The Milky Way

Front

What is the primary component of the universe?

Back

Dark Energy

Front

What is the term for a large system of stars, gas, and dust bound together by gravity?

Back

Galaxy