Mars may seem like a still, frozen desert, but more evidence suggests that the red planet is active in subtle ways.
원문출처 : https://www.cnn.com/2021/02/03/world/martian-landslides-ice-salt-scn/index.html
원문출처 : https://www.cnn.com/2021/02/03/world/martian-landslides-ice-salt-scn/index.html