Bruce Murray Space Image Library

Comet Siding Spring just hours before its close approach to Mars (Damian Peach)

Comet Siding Spring just hours before its close approach to Mars (Damian Peach)
Comet Siding Spring just hours before its close approach to Mars (Damian Peach) Less than eight hours from closest approach, Siding Spring's green coma is dwarfed by the brilliant blaze of Mars. SEN / Damian Peach

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