If the universe is a seemingly endless desert, planet Earth is just a grain of sand.
원문출처 : https://www.cnn.com/2021/11/20/world/science-newsletter-wt-scn-planet-b/index.html
원문출처 : https://www.cnn.com/2021/11/20/world/science-newsletter-wt-scn-planet-b/index.html