Which of the following telescopes is most suitable for observing cool gas clouds?
A) X-ray telescope
B) radio telescope
C) visible-light telescope
D) All of these choices are correct.
E) Cool gas clouds cannot be observed by telescopes.

Question

Quizplus · Accepted Answer

Radio telescopes are most suitable for observing cool gas clouds because they can detect the radio waves emitted by the cold hydrogen gas in these clouds.

Which of the Following Telescopes Is Most Suitable for Observing