| A | B |
|---|
| Sun | the center of our solar system |
| Mercury | closest planet to the son |
| Venus | earths twin |
| Earth | the only known planet with life |
| Mars | the red planet |
| Jupiter | the biggest planet |
| Saturn | known for its magnificent rings |
| Uranus | the planet other than Saturn with rings |
| Neptune | The planet that sometimes changes places with Pluto |
| Pluto | the farthest planet from the sun |
| Solar system | the collective term for the Sun, the planets, etc. |
| Astroid | one of the minor planets |
| Atmosphere | gases that surround and protect planets and other bodies |
| Black hole | an invisible region in space surrounding a colapsed star, from which no light can escape |
| Galaxy | a cluster of stars etc. |
| Comet | a piece of space debris made up of ice, gas, and dust |
| Meteoroid | a piece of tock hurtling through space |
| Satellite | a planet or moon |
| Star | a glowing sphere of gas that creates its own light |
| Shooting star | Meteor |
