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Lunar Palaeoregolith Deposits as Recorders of the Galactic Environment of the Solar System and Implications for Astrobiology

机译：月球Palaeoregolith沉积物，是太阳系银河环境的记录器，及其对天体生物学的影响

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摘要

One of the principal scientific reasons for wanting to resume in situ exploration of the lunar surface is to gain access to the record it contains of early Solar System history. Part of this record will pertain to the galactic environment of the Solar System, including variations in the cosmic ray flux, energetic galactic events (e.g., supernovae and/or gamma-ray bursts), and passages of the Solar System through dense interstellar clouds. Much of this record is of astrobiological interest as these processes may have affected the evolution of life on Earth, and perhaps other Solar System bodies. We argue that this galactic record, as for that of more local Solar System processes also of astrobiological interest, will be best preserved in ancient, buried regolith (‘palaeoregolith’) deposits in the lunar near sub-surface. Locating and sampling such deposits will be an important objective of future lunar exploration activities.
机译：希望恢复对月球表面的原位探索的主要科学原因之一是获得了它包含太阳系早期历史的记录。该记录的一部分将与太阳系的银河环境有关，包括宇宙射线通量的变化，高能银河事件（例如超新星和/或伽马射线爆发）以及太阳系穿过密集的星际云的通道。由于这些过程可能影响了地球以及其他太阳系物体的生命演化，因此许多记录都具有天文生物学的意义。我们认为，关于银河记录，以及更多具有天文生物学意义的本地太阳系过程的记录，将最好地保存在近地下月球的古代埋藏的re石（“ paleooregolith”）矿床中。对此类矿床进行定位和采样将是未来月球勘探活动的重要目标。

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