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How can we see quasars?

Answer 1

We "detect" or "sense" many forms of energy. We call it "seeing" from our cultural and language background.

Although quasars are very bright, we cannot actually "see" them with the naked eye. Instead, we use radio telescopes and more powerful visible telescopes like the Hubble to detect their presence and distinguish them from other types of bodies based on their energy emissions.

What is a Quasar? https://tutor.hix.ai

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Answer 2

Ivy Allen

Advanced telescopes, such as radio interferometers and space-based observatories, enhance the ability to study quasars across different spectra. Quasars are intense light sources that are often visible in optical wavelengths. They can be observed using telescopes that detect high-energy electromagnetic radiation, such as radio, infrared, and X-rays.

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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.