1.   But the Global Surveyor has taken a longer route to Mars so it can get into a polar orbit to begin a two-year mapping mission.

2.   Vandenberg was left with the Titan IV, a program that launches unmanned space vehicles that thrust satellites into more-difficult-to-reach polar orbit.

3.   With the emergence of the Alaska spaceport, Vandenberg will lose the distinction of being the only place in the United States where rockets are launched into polar orbit.

4.   Ahern said the low polar orbit satellites would allow Motorola to develop a mobile phone system that would work anywhere in the world.

5.   To be sent up later this year, the satellite will have a polar orbit, collecting data intended to help scientists better understand the climate and environment.

6.   This means India would be able to put satellites of other countries into the polar orbit for a fee.

a. + orbit >>共 170
higher 6.45%
low 5.38%
geostationary 5.16%
circular 4.30%
elliptical 3.66%
proper 3.23%
high 2.15%
different 1.94%
lunar 1.94%
elongated 1.51%
polar 1.29%
polar + n. >>共 114
opposite 22.22%
air 7.69%
ice 6.84%
winter 2.56%
explorer 2.35%
fleece 2.35%
lander 2.35%
expedition 1.92%
route 1.71%
exploration 1.50%
orbit 1.28%
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