The upheaval comes as NASA has struggled to fuel the massive Space Launch System rocket for the upcoming Artemis II lunar mission, and Isaacman has sought to revitalize an agency that has moved at a glacial pace on its deep space programs. There is ever-increasing concern that, absent a shake-up, China's rising space program will land humans on the Moon before NASA can return there this decade with Artemis.
回家过年前，我还特意体验了一家L4级无人驾驶出租车的服务：从上海世纪公园东南角前往上海科技馆地铁站——某上市运营商在浦东新区画出了一块面积不大的运营范围，两年前我曾在广州南沙体验过他们的服务。
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