This contains all of known space

To go around another object

This type of galaxy has the oldest stars and very little gas or dust

This model states that the sun revolves around the earth

The theory that states that all energy and matter was condensed into a singularity no bigger than a pin

This galaxy is shaped like a pinwheel

The theory that explains how the solar system was formed

This model accurately states that the earth revolves around the sun

When an object spins on its axis

This type of galaxy has no shape with few stars and lots of gas and dust

A force that tries to pull to objects together. The amount of force depends on the objects mass and distance

The galaxy we live in

The path a planet takes as it revolves around the sun

The largest celestial body

The scientist who built a telescope proving the Heliocentric Theory

It take the Earth 365 days to ________________________ around the sun

It takes the earth twenty-four hours to ___________________ on its axis