What are x-ray telescopes useful for?

Answer 1

Because X-rays cannot penetrate Earth's atmosphere.

Even the largest ground-based telescopes cannot detect X-rays because they cannot penetrate Earth's atmosphere. Therefore, X-ray telescopes are specially designed to detect X-rays and are placed outside of Earth's atmosphere, that is, in space, in order to detect these rays. One example of an X-ray telescope is the Chandra X-ray Laboratory, which was placed in orbit by NASA.

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Answer 2

Audrey Adams

X-ray telescopes are useful for studying high-energy astronomical phenomena such as black holes, neutron stars, supernova remnants, and hot gas in galaxy clusters.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.