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Calcium was detected in the near-Mercury exosphere by NASA MESSENGER spacecraft and has also been observed telescopically from Earth.
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DGCE SIG Seminar, 27 Aug 2026

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Nobile Crater and the smaller craters that litter its rim at the lunar South Pole.

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Nobile Crater and the smaller craters that litter its rim at the lunar South Pole.

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Nobile Crater and the smaller craters that litter its rim at the lunar South Pole.