Why do astronomers need different telescope designs to observe across the electromagnetic spectrum?
A) Light pollution is worse at radio wavelengths than visible wavelengths.
B) Telescopes have to adapt to the greater distortion of the atmosphere at shorter wavelengths.
C) Astronomers and engineers enjoy the challenge of making new telescope designs.
D) Photons of different energy behave differently and require different collection strategies.
E) New telescopes incorporate new technology to increase their efficiency.
