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.
Фото: Pierre Albouy / Reuters
Just after sunset on Saturday, Mercury, Venus, Saturn, and Neptune will appear low in the western sky, close to the horizon.，更多细节参见91视频
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