China's first man-made satellite Dongfanghong 1 made China the fifth country to send a satellite independently.

中国第一颗人造卫星“东方红一号”使中国成为第五个独立发射卫星的国家。

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One of them is the force of gravitation (地心引力), which tries to pull the satellite towards the earth and is like a rope which keeps the satellite from flying away.

其中一个是地心引力的力量，这股力量试图把卫星拉向地球，就像一根把卫星绑住的绳子，防止卫星飞远了。

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Pointing refers to the requirement to point the satellite (or an instrument on the satellite) toward some ground object.

指向的意思是要求卫星(或卫星上的设备)朝向一些地面目标。

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Scientists have long believed that Earth's satellite lacks the ability to hold water near its surface because it has no atmosphere.

VOA: special.2009.09.30

NASA used its Lunar Crater Observing and Sensing Satellite,or LCROSS, to look for water deep beneath the lunar surface.

VOA: special.2009.12.30

Military officials immediately offered to use the Jupiter to put a scientific satellite into orbit around the Earth.

VOA: special.2009.06.10

Now, Surrey Satellite Technology Limited (SSTL) is looking to launch a satellite into orbit and use a 'droid -- much smaller than the Astromech variety -- to control said satellite.

ENGADGET: SSTL using Android handsets to control satellites, conquer the final frontier

Once it became apparent that INSAT-4B was effectively dead, SunDirect ordered its servicemen to redirect customer satellite dishes to point to ASIASAT-5, a Chinese satellite owned and operated by Asia Satellite Telecommunications Co.

FORBES: Did The Stuxnet Worm Kill India's INSAT-4B Satellite?

Because the jamming was causing collateral damage to neighboring channels on Hotbird, the BBC reluctantly agreed to a request from a satellite-space middleman to move to another Eutelsat satellite, called W3A. It is less-watched, and the move initially cut BBC Persian's reach by at least half, the channel's director, Sadeq Saba, estimates.

WSJ: Censorship Inc.: In Skies Over Iran, a Battle for Control of Satellite TV