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High frequency waves from space must be observed from orbit because they are stopped by the:
AAtmosphere
BIonisation
CIllumination
DInterference
Answer & Solution
Correct answer: A. Atmosphere
1. Only some bands reach the ground.
2. The air above us absorbs the rest.
3. So the atmosphere stops them.
_Source: OpenStax Astronomy 2e, Chapter 5, Radiation and Spectra._
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