Galaxies are sprawling space systems composed of dust, gas, and countless stars.

星系是由灰尘、气体、数不清的恒星组成的蔓生的空间系统。

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Fission reactors provide a lot of power for their size, which is a key attribute in designing space systems.

原子反应堆相对于自身的体积，提供了大量的能量，这将是设计太空系统的主要特性。

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The contract was awarded by the Air Force's Infrared Space Systems Wing and will initially go for three years.

该合同是由空军红外空间系统部授予，合同时间开始为3年。

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The women recently earned master's degrees in space systems engineering from the University of Michigan.

VOA: special.2009.02.16

Mr. Spletzer says these robotic technologies are finding uses in space exploration, medicine, and security systems.

VOA: special.2011.06.21

So do empty food containers, space boots,life support systems and an American flag.

VOA: special.2010.03.02

Scientists at the University of Arizona are collaborating with NASA and Lockheed Martin Space Systems on this mission.

CNN: So, about that asteroid near Earth ...

Sierra Nevada Space Systems showed video of a successful flight of their Dream Catcher orbital space vehicle this year.

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Cancellation of most of the space systems associated with the Reagan-era program led the Air Force to lose interest.

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