When future generations write about the history of space travel, 2021 may well get its own chapter. "The year of the billionaires," it might be called.
원문출처 : https://www.cnn.com/2022/01/01/tech/space-business-year-in-review-scn/index.html
원문출처 : https://www.cnn.com/2022/01/01/tech/space-business-year-in-review-scn/index.html