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Many things that we here cannot detect. Different spectrum of light of weather helps in interpreting the weather.Seeing seismic cracks in the earths crust . There are many, in infer- red sensing can give very accurate temperatures.

2007-04-19 09:19:28 · answer #1 · answered by JOHNNIE B 7 · 1 0

A full answer to this question would take hours to write. Take a look at this Wikipedia article. It will give you a lot of good points and references. http://en.wikipedia.org/wiki/List_of_Earth_observation_satellites

2007-04-19 12:58:56 · answer #2 · answered by Otis F 7 · 1 0

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