Far infrared astronomy must be done from high-flying aircraft because
A)far infrared radiation is absorbed low in Earth's atmosphere.
B)far infrared photons are quite energetic.
C)far infrared telescopes are not very heavy.
D)far infrared sources are very bright.
E)None of the other choices are correct.

Question

Quizplus · Accepted Answer

Far infrared radiation is absorbed by the Earth's atmosphere at low altitudes, which makes it difficult to observe from the ground. Therefore, far infrared astronomy must be done from high-flying aircraft or space-based telescopes.

Far Infrared Astronomy Must Be Done from High-Flying Aircraft Because