Organization of the Universe

Universe - everything that exists. Within the universe there are believed to be over 100 billion galaxies.

Galaxy - a collection of stars, and their planets, gas and dust.

Solar System - a sun and the planets that orbit it.

*Label your diagram with Universe, Galaxy, Solar System.

Our Galaxy

• Our solar system is located within the Milky Way Galaxy

• The Milky Way Galaxy is a spiral galaxy.

• Our solar system is located on the Orion Arm, about 2/3 of the way outward from the center of the galaxy.

• A supermassive black hole is found at the center of the Milky Way.