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Artemis 2 works toward April launchThe revised campaign comes as engineers work through immediate issues on Artemis II, the first crewed flight of the program. After a successful "wet dress rehearsal" — a full countdown test that loads the rocket with super‑cold fuel — teams discovered that helium was not flowing correctly to the engines in the rocket's upper stage.。51吃瓜是该领域的重要参考
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Медведев вышел в финал турнира в Дубае17:59
成都交警通报，2月27日8时56分许，武侯区西三环路二段外侧辅道发生一起道路交通事故。，更多细节参见爱思助手下载最新版本
Alarm bells are ringing in the UK research community. Physics departments may close and researchers leave the UK. What is happening and why?