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Eyewitness: Encyclopedia of Space & the Universe
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Portable Network Graphic
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1996-04-23
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5KB
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242x218
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8-bit (42 colors)
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OCR:
FACT FILE THE NAVSTAR SATELLITES, the US network that revolutionized air and sea navigation, have atomic clocks so accurate that they will lose or gain only one second in 300,000 years.
