https://www.space.com/27696-mars-comet-flyby-dust-fallout.html
Comet Dust Painted Red Planet's Sky Yellow in Rare Mars Flyby | Space
Nov 7, 2014 - The rare flyby of the Comet Siding Spring by Mars on Oct. 19 painted the Martian sky yellow with comet dust, scientists say. See how it happened here.
planet s sky