What is at the center of the galaxy? Why does the center appear to be so bright?
Saggitarius A
Based on observations and research, astronomers have determined that Saggitarius A, a supermassive black hole with a compact radio source that is 4 million times the mass of the sun, is located at the center of the galaxy. Despite its massive size, Saggitarius A is not as massive as other black holes.
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At the center of the galaxy lies a supermassive black hole called Sagittarius A*. The brightness of the center is due to the intense radiation emitted as matter falls into the black hole's gravitational well, creating an extremely luminous region known as an accretion disk.
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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.
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.
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.
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.

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