Bob Zimmerman — China successfully recovered a reusable rocket stage, joining SpaceX and Blue Origin in the race for cheaper launches; on the ISS, a private company successfully manufactured human kidney and liver tissues, and SpaceX continues to break re

Bob Zimmerman — China successfully recovered a reusable rocket stage, joining SpaceX and Blue Origin in the race for cheaper launches; on the ISS, a private company successfully manufactured human kidney and liver tissues, and SpaceX continues to break records, with boosters flying up to 36 times, significantly reducing satellite launch costs. (15)
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