Golf - the only human sport to be played on another world.

7. 6 3 4 5 2 1 7

11. Golf - the only human sport to be played on another world. • Alan Shepard hit 2 golf balls on February 6, 1971 right before they took off from the moon at the end of the Apollo 14 mission.

12. Major Lunar Surface Features 1. Maria – Basaltic volcanic flows. Made of Lunar Basalt 2. Craters – Impact scars from asteroid/comet 3. Mountains/Highlands – Uplift around edges of craters. Made of Breccia and Anthrosite

13. Maria • Valleys: Called Maria. * Thought to be filled with water. * Formed by massive basaltic lava flows. * These are the dark spots on the moon’s surface.

14. Moon’s geology • Craters: Shows moons lack of tectonic activity. * Lava flows covered most craters. * After volcanic activity has ceased impact craters are visible.

15. Lunar HighlandsComposed of Breccia and anothrosite

16. LCROSS mission

18. Rays – Ejected material from an impact event Rilles – collapsed lava tubes

19. Gravity on the Moon • Gravity Pulling the Moon:6:1 ratio Calculate your weight on the moon*** • Due to gravitational forces… one side of the moon is always facing the earth.

21. The moon is moving farther away • Moving away at a rate of 3.8 cm/year • This will cause weaker tides • Eventually no more total solar eclipses

23. Nearside- The side we always see The moon is gravitationally fixed

24. Synchronous Rotation One side (near side) is locked in, facing Earth at all times.

25. Dark Side of the Moon? • We always see one side of the moon • Near side: Has the “Man on the Moon” • Far side: Not always the dark side. The dark side of the moon always changes.

26. Two Faces of the Moon Impact Basin Maria Cratered Highlands Far Side Near Side

27. Farside of the moon… the side we never see

28. Sidereal Period – 27.3 days – the time it takes for a complete orbit around the Earth with respect to the fixed stars ONE MOONTH • Synodic period – 29.5 days - since the Earth is moving in its orbit about the Sun at the same time, it takes slightly longer for the Moon to show the same phase to Earth

29. Sidereal vs. Synodic(w/ respect to the stars) vs. full to full

30. Moon moves to the East 13 degrees each day, making it rise ~50 minutes later each day

31. Earthshine – During a crescent phase, earth’s reflected light illuminates the rest of the moon.

33. South Pole – Aitken Basin

34. Moon Formation – Impact theory • The leading theory states that there was a massive impact between Earth and another planet sized object (Ophiucus)

35. Moon Formation Theory • 4.5 bya • Planet sized object hit the earth while it was still forming.

36. Moonislessdensebecauseimpactsent Earth’slessdensematerialtoformthemoon. Averagedensityof3.3g/cc

37. Mountains

38. Moon’s negligible atmosphere • Miniscule - Formed by meteor impacts • Moon has no atmosphere • So everything that enters its gravitational field makes it to the surface

40. Craters on Earth • We have been hit by just as many meteorites as the moon • Earth’s craters are erased by tectonic activity and weathering • Barringer crater, AZ

43. Perigee – When the moon is closest to the Earth • Apogee – When the moon is furthest from Earth