It's invisible in the night sky, but above us there is a cloud of more than 9,000 tons of space junk -- equivalent to the weight of 720 school buses.
원문출처 : https://www.cnn.com/2021/03/19/business/space-junk-mission-astroscale-scn/index.html
원문출처 : https://www.cnn.com/2021/03/19/business/space-junk-mission-astroscale-scn/index.html