Satellites
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orbit the earth doing our bidding in ways that enrich the lives
of almost all of us. Through electronic eyes from hundreds of miles
overhead, they lead prospectors to mineral deposits invisble on earth's
surface. Relaying communications at the speed of light, they shrink the
planet until its most ....
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.... into the immensity of space. When a satellite emerges from the
rocket's protective shroud, radiotelemety regularly reports on its health
to round-the-clock crews of ground controllers. They watch over the
temperatures and voltages of the craft's electronic nervous system and
other vital "organs", always critical with machines whose sunward side may
be 300 degress hotter than the shaded part.
Once a satellite achieves orbit--that delicate condition in which the pull
of earth's gra ....
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Page count: 2 (approximately 250 words per page)
