Which of the following telescopes must be used above Earth s atmosphere?
A) an optical telescope
B) the VLBI telescope
C) an x-ray telescope
D) a radio telescope
E) none of the above

Question

Quizplus · Accepted Answer

An x-ray telescope must be used above Earth's atmosphere because x-rays are absorbed by the atmosphere, so the telescope must be above the atmosphere to detect them. Optical, VLBI, and radio telescopes can all be used on Earth. An x-ray telescope must be used above Earth's atmosphere, as x-rays are absorbed by the atmosphere and cannot penetrate to the Earth's surface.

Which of the Following Telescopes Must Be Used Above Earth