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Thursday, September 21, 2017

Mars

Science Daily: Solar eruption ‘photobombed’ Mars encounter with Comet Siding Spring
summary - When Comet C/2013 A1 (Siding Spring) passed just 140,000 kilometers from Mars on 19th October 2014, depositing a large amount of debris in the Martian atmosphere, space agencies coordinated multiple spacecraft to witness the largest meteor shower in recorded history. It was a rare opportunity, as this kind of planetary event occurs only once every 100,000 years.

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