| A | B |
|---|
| 100 degrees and -170 degrees | temperatureson the moon |
| one -sixth | the moons gravity compared to Earths |
| 3,476 kilograms | the moons diameter |
| one-fourth | the moons diameter compared to Earth |
| one-eighth | the amount of mass compared to Eart |
| 4.5 billion years ago | an object collided with Earth |
| 1609 | Galileo makes his own telescope |
| craters | round pits |
| maria | seas |
| Eagle | spacecraft that carried Amstrong and Aldrin |
| 382 kilograms | amount of moon rock the apollo 11 astronauts brought back |
| Lunar Prospector | mapped the moon from 100 kilometers out |
