美国航天局说，在地球上稀疏的白色卷云是由冰晶所组成的。
On Earth, NASA says, white wispy cirrus clouds are made of ice crystals.
这一点与许多早期的风洞的情况下，美国航天局说，它的结构支持是在外面。
As was the case with many early wind tunnels, NASA says, its structural supports are on the outside.
美国航天局说，这个轨道飞行器在6月3日意外地重启它的计算机，工程师们于6月6日把它带出待机模式。
The orbiter unexpectedly rebooted its computer on June 3, and engineers brought it out of standby mode on June 6, NASA said.
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