调查显示，挑战者号发射当日低温，导致火箭推进器上橡胶O行环密封圈失效，进而引起爆炸性气体泄露。

Theinvestigation showed that low temperatures on the day of the launch caused arubber “O-ring” seal on one of the rocket boosters to fail, which led to a leakof explosive gases.

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那就意味着卫星和助推火箭必须同步设计，这样消费者才不会为各种发射器多番比较。

That would mean satellite and launch rocket would have to be designed in tandem, so customers could not shop around for different launch vehicles.

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研究者希望化学反应后产生的氢，不仅能发射火箭，也能为长时间的空间任务补充氢电池。

Researchers hope that the hydrogen products of that reaction might go beyond launching rockets, and also feed hydrogen fuel cells for long duration space missions.

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