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symbo symbo
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Posts: 1970
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7 years ago
Suppose an astronomical satellite observes the Orion Nebula at a wavelength of 1250 nm. In what wavelength range is this satellite observing?
A.   Infrared.
B.   Ultraviolet.
C.   X rays.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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symbo Author
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6 years ago
It's correct Smiling Face with Open Mouth
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