欧洲航天局宣布将独立继续推进Envision金星轨道器任务1。这一决定源于美国国家航空航天局无法履行在合作协议中的承诺1。根据NASA和欧航局在2024年签署的备忘录，美国原本承诺为该任务提供合成孔径雷达仪器和深空网络支持1，但美国官员已确认他们不太可能实现这一承诺1。
Envision任务将利用雷达穿透金星表面厚重的硫酸云层，以比NASA在1990年代最后一次金星任务高10倍的分辨率绘制金星地表地图，并寻找火山活动迹象1。欧航局将负责建造Envision航天器及其他科学仪器，并通过Ariane 6火箭为任务提供发射服务1。
The European Space Agency announced it will proceed alone with the Envision orbiter mission to Venus after NASA determined it could not fulfill its commitment to provide a synthetic aperture radar instrument 1. NASA and ESA had signed a memorandum of understanding for the Envision project in 2024, under which the U.S. agency had pledged to supply the radar instrument and deep space network support 1.
The Envision spacecraft will map Venus's surface at a resolution ten times higher than NASA's final mission to the planet in the 1990s 1. The radar will penetrate Venus's thick sulfuric acid clouds to detect surface features and search for signs of volcanic activity 1. ESA will construct the Envision spacecraft and its other scientific instruments, with launch planned aboard an Ariane 6 rocket 1.
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