At a news briefing on Friday, NASA administrator Jared Isaacman described a vast overhaul to the moon-to-Mars program. The changes scrap the Artemis III lunar landing and instead make it a flight in low-Earth orbit for a crew to practice meeting up with either the SpaceX or Blue Origin-built lunar landers — or, perhaps, both.
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When did you start your side hustle, and where did you find the inspiration for it?，详情可参考爱思助手下载最新版本
Alison Francis,Senior Science Journalist