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The Case for Non-Cryogenic Comet Nucleus Sample Return

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arxiv 2009.14366 v1 pith:A75B55YZ submitted 2020-09-30 astro-ph.IM astro-ph.EPastro-ph.SR

The Case for Non-Cryogenic Comet Nucleus Sample Return

classification astro-ph.IM astro-ph.EPastro-ph.SR
keywords cometscometearthformorganicsalterationcometarycomplex
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Comets hold answers to mysteries of the Solar System by recording presolar history, the initial states of planet formation and prebiotic organics and volatiles to the early Earth. Analysis of returned samples from a comet nucleus will provide unparalleled knowledge about the Solar System starting materials and how they came together to form planets and give rise to life: 1. How did comets form? 2. Is comet material primordial, or has it undergone a complex alteration history? 3. Does aqueous alteration occur in comets? 4. What is the composition of cometary organics? 5. Did comets supply a substantial fraction of Earth's volatiles? 6. Did cometary organics contribute to the homochirality in life on Earth? 7. How do complex organic molecules form and evolve in interstellar, nebular, and planetary environments? 8. What can comets tell us about the mixing of materials in the protosolar nebula?

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