In September, 2008, the NASA Phoenix lander used lidar to detect snow in the atmosphere of Mars.NASA. 'NASA Mars Lander Sees Falling Snow, Soil Data Suggest Liquid Past' NASA.gov (29 September 2008) . Retrieved 9 November 2008.
In September, 2008, the NASA Phoenix lander used lidar to detect snow in the atmosphere of Mars.NASA. 'NASA Mars Lander Sees Falling Snow, Soil Data Suggest Liquid Past' NASAgov (29 September 2008) . Retrieved 9 November 2008.