Green MattersBY SOPHIE HIRSH
JUL. 7 2021, PUBLISHED 3:38 P.M. ET
Elon Musk’s Teslas are making the car industry greener — and now, he claims that his SpaceX rocket can make outer space greener, too. Elon Musk says that the Starship, which he hopes one day will transport humans to Mars, can clean up space by collecting space junk, aka space debris.