Solar System review!

Stars are classified by their color, size, temperature, and ____________?

Rocks and chunks of debris from space slammed into the moon and formed ...?

Huge balls of hot, glowing gases that produce that produce their own heat and light are...?

_____________ galaxies do not have any particular shape.

Jupiter, Saturn, Uranus, and Neptune are ...?

Blue stars are the ______________ stars in the galaxy.

A nebula is a giant cloud of gas and __________?

The changes in the appearance of the moon's size are known as...?

The pull of Earth's gravity keeps the _____________ in its orbit around Earth.

The imaginary pole or line that runs through the Earth's center is called...?

Vehicles that move through space, but are controlled from Earth are...?

A group of billions of stars is a...?

Observatories have powerful ________ that enable scientists to track things in space.

A person who studies the universe is called a(n)...?

A group of stars that seem to form a pattern in the sky are called...?