Once, we saw it was moving in a pattern consistent with an orbit.

有一次，我们看到它以与轨道一致的方式移动。

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The Caib probe concluded astronauts would still be unable to fix such damage once in orbit.

哥伦比亚事故调查委员会经过周密调查后得出结论：万一航天飞机在轨道运行中发生类似的损坏，宇航员仍旧无法展开修复工作。

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The satellites sit in a very special orbit that allows them to circle the Earth once in 24 hours.

这些卫星位于一个十分特殊的轨道，以便它们能每隔24小时环绕地球一周。

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Once the shuttle is retired this year, the only way for the United States to get astronauts into orbit will be on Russian Soyuz rockets.

VOA: special.2010.04.28

This is a best-practice time-limit adopted by the world's space agencies for the removal of their equipment from orbit once it has completed its mission.

BBC: Space debris collisions expected to rise

They not only had to wait until the space station steered into the proper lane for the Soyuz, but they had to pick a time when the distance between the station and the Soyuz once the Soyuz reached orbit was at a minimum.

FORBES: How Astronauts Got From Kazakhstan To The Space Station In Six Hours

What makes it Vulcanlike, though, is that it circles its star, Kepler-10, once every 20 hours, in an orbit a twentieth the size of Mercury's.

ECONOMIST: Time to start giving extrasolar planets proper names