What does light emitted by quasar convey?

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SUMMARY

Quasars emit light that is significantly red-shifted, indicating they are moving away from Earth at high speeds. This red-shift is a direct result of the Doppler effect, which explains the relationship between the observed wavelength of light and the velocity of the emitting object. Quasars are crucial for astronomical studies as they are among the brightest objects in the universe, allowing scientists to observe phenomena at the farthest edges of the observable universe. The consistent pattern of red-shifted light from distant quasars supports the theory of an expanding universe.

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people say that light emitted by quasar states that it is moving away from us? why? is it related to doppler effect? if so please explain.
 
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Thne reason quasars are important to us is that due to the fact that they are some of the brightest objects in the universe - they can be seen from very very far away. This gives us insight into what is happening at the very farthest edges of our observable universe.

Light from distant quasars is hugely red-shifted. This red-shift is interpreted as rapid recession. In fact, it's pretty consistent that, the farther away an object is, the faster it is receding.
 

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