This contains all existing matter.

This is a group of billions of stars held in place by the gravity of a black hole.

This is a group of planets and other objects going around a single star.

Which of the following explains what a light year is?

The measurement of the amount of gravity is known as

A giant, burning ball of gases that are located in throughout galaxies and in the center of solar systems

Spherical objects that orbit the sun in nearly circular paths and are large enough to withstand impacts with other objects that enter their orbit.

Rocky objects that orbit the sun between Mars and Jupiter.

Objects that orbit planets.

Objects made of rock, gas, and ice that orbit the sun in very oblong orbits and develop a tail called a coma when they come close to the sun.

Small, rocky objects that enter Earth's atmosphere and burn up before they hit Earth's surface.

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