The desire to increase landing safety margins for the Space Shuttle Orbiter led to decision to implement a Drag Parachute System into the Orbiter Vehicle.

航天飞机轨道器设置阻力伞的目的在于增加其着陆的安全性。

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The orbiter could finally provide evidence about how methane on Mars is created and destroyed.

VOA: special.2009.12.30

Michael Meyer also says NASA is developing an orbiter with European scientists.

VOA: special.2009.12.30

After that,space station partners will rely on Russian and private launch vehicles to ferry supplies to the orbiter.

VOA: standard.2010.04.05

Moreover, the agency has said the rest of the orbiter was otherwise operating normally.

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To snap the photos, the orbiter had to be pointed off of its normal, straight-down view.

CNN: Mars Pathfinder enlisted in search for lost Polar Lander

Even the reconnaissance orbiter had to wait until sunlight streamed to the northern lunar region.

NPR: NASA Moon Craft Spots Ebb And Flow Crash Sites