（新华社北京2月27日电 记者韩洁、胡璐、古一平、韩佳诺）
The Artemis IV and V missions in 2028 will use whichever landers are deemed ready for service. If only one company's lander is available, that lander would be used for both missions, an official said. If both are available, one would be used for one flight and one for the other.
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63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54
Launching Artemis III, IV and V before the end of 2028 will not be easy, and Isaacman said it is essential that NASA rebuild its workforce and regain the technical competence to support a higher launch cadence, moving from one flight every 18 months or so to a flight every year. That pace, he argued, will reduce risk.