Do astronomers use ground-based X-ray telescopes?
A) Yes, because they can penetrate gas clouds.
B) No, because no astronomical objects emit X-rays.
C) No, because X-rays cannot get through Earth's atmosphere.
D) No, because astronomers have not yet devised detectors for X-rays.

Question

Quizplus · Accepted Answer

X-rays cannot penetrate Earth's atmosphere, so astronomers use space-based telescopes to observe X-ray emissions from astronomical objects.

Do Astronomers Use Ground-Based X-Ray Telescopes