Science
Mysteriously Long, Thin Cloud Returns on Mars – Not Linked to Volcanic Activity – techtoday19
VMC Image acquired on July 19, 2020 at 08:14:51 at an altitude of 10036.58 km above Mars, on Mars Express orbit number 20919. Credit: ESA/GCP/UPV/EHU Bilbao A mysteriously long, thin cloud has again appeared over the 20-km (~12 miles / 65,000 feet) high Arsia…

VMC Image acquired on July 19, 2020 at 08:14:51 at an altitude of 10036.58 km above Mars, on Mars Express orbit number 20919. Credit: ESA/GCP/UPV/EHU Bilbao
A mysteriously long, thin cloud has again appeared over the 20-km (~12 miles / 65,000 feet) high Arsia Mons volcano on Mars.
A recurrent feature, the cloud is made up of water ice, but despite appearances, it is not a plume linked to volcanic activity. Instead, the curious stream forms as airflow is influenced by the volcanos leeward slope…