Only one spacecraft has flown near Uranus and Neptune, the mysterious ice giant planets on the edge of our solar system.
원문출처 : https://www.cnn.com/2020/03/27/world/uranus-plasmoid-voyager-2-scn/index.html
원문출처 : https://www.cnn.com/2020/03/27/world/uranus-plasmoid-voyager-2-scn/index.html