13 years and $500 million for a stage adapter? Report justifies NASA cancellations.
摘要
美国国家航空航天局（NASA）局长贾里德·艾萨克曼宣布，该机构将放弃在月球轨道建设空间站，转而专注于月球表面基地建设，并终止了太空发射系统火箭新型上面级的开发。艾萨克曼称，这些项目并非载人登月所必需，且远超预算、延误多年、尚未就绪。此举引发部分承包商不满，认为NASA放弃了接近完成的硬件。
Three months ago, NASA Administrator Jared Isaacman announced the space agency was making a major pivot from building a space station in lunar orbit to a base on the surface. This "Ignition" event followed an earlier announcement in which NASA also said it was ending development of a new upper stage for its Space Launch System rocket.
In the aftermath of these decisions, there was some grumbling—mostly from contractors involved with the programs—that NASA was foolishly walking away from nearly complete hardware that the space agency needed for its Artemis Program.
Isaacman said these programs were not essential for landing humans on the Moon, and added that they had cost far more than originally budgeted and had been subjected to years of delays. Moreover, they were still not ready.
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