Why are quasars rare today? Today\'s black holes are too massive to be classifie
ID: 304819 • Letter: W
Question
Why are quasars rare today?
Today's black holes are too massive to be classified as quasars.
There is so much dust today that it obscures quasar emission.
Not enough matter is near enough to accrete onto supermassive black holes.
The Universal expansion has spread out the quasars.
Today's black holes are too massive to be classified as quasars.
There is so much dust today that it obscures quasar emission.
Not enough matter is near enough to accrete onto supermassive black holes.
The Universal expansion has spread out the quasars.
Explanation / Answer
They are extremely large remote Celestial object that emits very large amount of energy just like a black hole, it has a star like image in telescope.It can be observed on rafio, infrrared, uv wavelength.
So option a is correct
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