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Outstanding Lunar Science Questions and Opportunities Created by the ESA Lunar Lander Programme Ian Crawford Key Lunar Science Drivers (1) The bombardment history of the inner solar system is uniquely revealed on the Moon (2) The structure and composition of the lunar interior provide fundamental information on the evolution of a differentiated planetary body (3) Key planetary processes are manifested in the diversity of lunar crustal rocks (4) The lunar poles provide special environments that may bear witness to the volatile flux over the latter part of solar system history Lunar Science at the South Pole Studies of the crustal evolution of the Moon • SPA will have exposed lower crustal and possible mantle material • Shackleton lies within the SPA just • Materials on the rim of Shackleton will likely sample this material. Studies of polar volatiles? 3μm absorption band: surficial OH, H2O (≤800 ppm; C. Pieters et al., Science, 326, 568 2009). In situ measurements required to determine thickness and composition and origin of these volatiles M3/NASA/ISRO Solar-terrestrial physics and radio astronomy from the Moon • Lunar plasma environment and space weather • Earth’s magnetosphere and its interaction with the lunar surface • Low-frequency radio science (radio astronomy site testing) (Credit: Steve Sembay, Leicester) Lunar Lander • A mission to position Europe as a partner in future exploration • Defined to drive key technologies and perform exploration enabling science 7 Science objectives and overlap with STFC „Big Science Questions‟ Science and Exploration Objectives Characterise the lunar environment Explore the geology and geochemistry of the South Pole of the Moon, and determine abundance of potential resources Specific Scientific Investigations STFC ‘Big Question’ Relevance • Radiation particles and fluxes • Properties of dusty plasmas • Solar wind and magneto-sphere interactions • Composition and origin of lunar exosphere (4) How does the Sun affect the Earth? • Geochemistry and mineralogy of the South Pole-Aitken Basin (2) How do galaxies, stars and planets form and evolve? [In particular, the origin and evolution of the Earth-Moon system] • Composition and origin of volatiles trapped at lunar poles (5) What are the origins and properties of energetic particles? (6) Are we alone in the Universe? [In particular, from astrobiological studies of polar ices] Prepare for future exploration activities • Toxicity of lunar dust • Biological effects of the lunar radiation field Radio astronomy precursor • Determine transmission properties of lunar exo/ ionosphere (especially at low frequency) N/A for STFC (i.e. MRC, BBSRC), but future lunar exploration will likely facilitate key science benefits in STFC science areas (1) What is the Universe made of and how does it evolve? [In particular, lowfreq. radio astronomy would provide a window on the cosmic „dark ages‟] 8 Recommendation 13: “….The UK should support exploration activity options as set out in the UK‟s Space Exploration Review….” The SER in turn recommended participation in the “ESA Small Lander” as part of the preferred Option 4(b): „Integrated human and robotic‟. Recommendation 15: “The UK should invest earlier, more consistently, and at a higher scale in ESA programme in order to maximise the UK‟s economic and social benefits from these programmes.”