youdao

There was no grand follow-up to the Apollo missions.

阿波罗计划没有后续的大动作。

youdao

Without that research and investment, there is no foundation to build our future missions and discovery, "Braun added."

没有这些研究和投入，就没有完成我们未来任务和新发现的基础，“布劳恩补充道。”

youdao

No other missions are scheduled but Russian space officials hope to keep Mir in orbit beyond its scheduled retirement this summer.

CNN: Space crew reaches Mir for possibly last mission

This study incorrectly maintained that there are no prospective military missions for the NASP.

CENTERFORSECURITYPOLICY: Get The National Aerospace Plane Off The Ground

But the field could develop fast, as prototype picosatellites can ride along with other missions at almost no extra cost.

ECONOMIST: Picosatellites