Mars is about to be a very busy place when three separate missions arrive at the red planet in February.
원문출처 : https://www.cnn.com/2021/01/18/world/nasa-mars-rover-lander-scn-trnd/index.html
원문출처 : https://www.cnn.com/2021/01/18/world/nasa-mars-rover-lander-scn-trnd/index.html