NEOWISE Spies Comet C/2013 A1 Siding Spring a Second Time

NASA NEOWISE mission detected comet C/2013 A1 Siding Spring on July 28, 2014, less than three months before this comet close flyby of Mars on Oct. 19.

NASA NEOWISE mission detected comet C/2013 A1 Siding Spring on July 28, 2014, less than three months before this comet close flyby of Mars on Oct. 19.

Album 2020_Comet_NEOWISE