| Term | Definition |
|---|
| universe | all of the objects that exist in space |
| galaxy | system of trillions of stars held together by the force of gravity |
| astronomy | the study of planets, stars, and other objects in space |
| solar system | a system of planets and other objects that move around the sun |
| space probe | a vehicle that carries cameras and other tools for studying distant objects in space |
| craters | a large hold shaped like a bowl in the surface of a planet or object in space |
| satellite | something that orbits a planet |
| Milky Way Galaxy's Shape | shaped like a flat spiral |
| Sun | a medium star that provides light and heat for the Earth |
| Gravity | helps keep all the planets in orbit around the sun |
| Inner Planets | Mercury, Venus, Earth, Mars - small and rocky |
| Outer Planets | Jupiter, Saturn, Uranus, Neptune |
| Moons | Mercuy and Venus have none of them, Earth has one of them |
| Weigh more on Venus | a person would weigh more on Venus because the pull of gravity is stronger |
| Life on Earth possible because... | atmosphere and liquid water |
| Mars | fourth planet from the Sun, frozen water, 2 moons |
| Jupiter | largest planet, 63 moons, "Great Red Spot" weather system |
| Gas Giant | a very large planet made mostly of gases |
| Saturn | gas giant with bright rings and at least 31 moons |
| Uranus | the only planet that rotates on its side, 27 moons, cold |
| Neptune | smallest gas giant, blue color, ring system, 13 moons |
| Pluto | dwarf planet |
| No Life on the Moon? | No atmosphere or water |
Combine with other sets
Share on Facebook
Share on MySpace