A comet with a tail streaking through space with small, orange Mars in the backgrounda along with many stars.

Comet Siding Spring and Mars

A unique composite image of comet Siding Spring as it made its never-before-seen close passage of a comet by Mars.

Credits: NASA, ESA, PSI, JHU/APL, STScI/AURA
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Image CreditNASA, ESA, PSI, JHU/APL, STScI/AURA
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