A video posted to social media shows scenes on the ground the aftermath of the strike on a neighborhood in Tehran.
Isaacman pointed to hydrogen leaks on Artemis I and helium flow problems on Artemis II as signs that a three‑year gap between launches is not sustainable. When teams only fly every few years, he said, they lose "muscle memory" — the routine, hands-on experience required to handle a complex rocket safely and efficiently.，详情可参考搜狗输入法2026
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