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
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.