1. The Earth’s Moon

2. A few basics Radius: 1738km Radius: 1738km Density: 3.34 g/cubic cm Density: 3.34 g/cubic cm Mean distance: 384,000 km Mean distance: 384,000 km Orbital period: 27.3 days Orbital period: 27.3 days

3. Phases of the Moon

5. Side of the Moon facing the Earth

6. Lunar Libration

7. Moon at Apogee and perigee

8. Moon at first quarter

9. Moon: Nearside

10. Moon: farside

11. Riddling out the history of the moon There was a long argument as to whether the craters of the moon were volcanic or caused by impacts There was a long argument as to whether the craters of the moon were volcanic or caused by impacts

12. A Michigan native, Ralph Baldwin, helped turn the argument in favor of impacts