1. Space

2. Universe
All of space that includes many galaxies

3. Galaxy A system of stars mixed with gas and dust.
We are part of the Milky Way Galaxy, which is a spiral galaxy.
The next closest galaxy is called Andromeda.
There are approximately 200 billion stars in our galaxy.

5. Solar System
The solar system includes the sun and all the bodies that orbit around it.

6. Planet
A spherical body that orbits around the sun and has its own gravity

7. Put the following in order from largest to smallest:
Solar System
Universe
Galaxy
Planet
Universe
Galaxy
Solar System
Planet

8. Inner Planets
These are known as terrestrial planets because they are dense and rocky
Mercury
Venus
Earth
Mars

9. Outer Planets
These are known as the gas giants because they are very large and mostly made of gas
Jupiter
Saturn
Uranus
Neptune

10. Dwarf Planet - Pluto
Pluto is now classified as a dwarf planet because it is very small

11. Solar System Diagram

12. Sustain Life
Atmosphere: Mixture of gases surrounding earth or a celestial body, held in place by gravity.
Sustain: To keep up or keep going.