TIMED Artist Concept (IMAGE)

NASA/Goddard Space Flight Center

TIMED Artist Concept

Caption

Shown in this artist's concept, NASA's TIMED spacecraft has been observing Earth's upper atmosphere for 15 years, leading to new understandings of how this region interacts with the lower atmosphere below and space above -- and now, how the very same chemistry may play out on exoplanets.

Credit

NASA/JHU-APL

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