Mercury Hydrogen Tail
Review conditions
Calcium was detected in the near-Mercury exosphere by NASA MESSENGER spacecraft and has also been observed telescopically from Earth.
Review conditions
Rights evidence
NASA media-use guidance applies; NASA identifiers, endorsement, third-party material, and personality rights require separate review.
Suggested attribution
Mercury Hydrogen Tail. Credit: NASA / JPL.
Mercury Hydrogen Tail. Credit: NASA / JPL.
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