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5PTYS_206_moon - PYTS/ASTR 206 The Moon q 1 Announcements s...

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PYTS/ASTR 206 – The Moon 1 Announcements Homework #2 due now 50% credit if handed in next Tuesday Mid-term #1 in 1 week Based on the first 10 lectures Multiple choice - bring pencils Lasts 1 hour and starts on time
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PYTS/ASTR 206 – The Moon 2 PTYS/ASTR 206 – The Golden Age of Planetary Exploration Shane Byrne – [email protected] The Moon
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PYTS/ASTR 206 – The Moon 3 In this lecture… Two types of terrain Highlands Maria Geologic features on the Moon Craters and Volcanoes Formation of the Moon Giant impacts & Magma Oceans The late heavy bombardment Formation of the Maria The recent years
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PYTS/ASTR 206 – The Moon 4 The moon is very close in comparison to other solar system objects It’s 30 Earth diameters away Mars (when closest) is ~6000 Earth diameters away Other planets are even further
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PYTS/ASTR 206 – The Moon 5 5 th largest satellite in the solar system Rock-like density No atmosphere So no wind action e.g. sand dune No river channels or rainfall etc… Critical body for planetary science Much of what we do in studying solid planets started with work on the Moon Simpler to understand than most planets
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PYTS/ASTR 206 – The Moon 6 Easy to get to – heavily visited by spacecraft Late 1950s to early 1970s Robotic craft from the USA & USSR Ranger Lunar Orbiter Surveyor Luna Robotic Rovers (USSR) Lunokhod Manned missions (USA) Apollo 1990s Clementine Lunar Prospector
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PYTS/ASTR 206 – The Moon 7 More missions Chandrayaan (India) Chang’E (China) Kaguya (Japan) Smart 1 (Europe) LRO (USA) – launching soon
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PYTS/ASTR 206 – The Moon 8 Maria Dark material – once thought to be seas Terrae Highlands Light material – once thought to be the dry land Two terrain types
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PYTS/ASTR 206 – The Moon 9 No one knew what the far side of the Moon looked like until 1959 Soviet Union launched Luna 3 Far-side looks nothing like the near side No Maria Near side Far side
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PYTS/ASTR 206 – The Moon 10 Maria Highlands (Terrae) Low elevations High elevations Darker Brighter Few craters Many craters (saturated) Smooth Rough Volcanic features Few volcanic features
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PYTS/ASTR 206 – The Moon 11 The Moon is a really simple planet Craters Simple craters <18km diameter Complex craters >18km diameter Multi-ring basins
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