# Infinite brightness in the singularity?

## Main Question or Discussion Point

Since the black hole has infinite brightness near the singularity just below the photon sphere, would the big bang singularity also possess such characteristic?

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Since the black hole has infinite brightness near the singularity just below the photon sphere
What do you mean infinite brightness?

What do you mean infinite brightness?

"The Universe appears brighter and brighter as you approach the horizon, tending to infinite brightness at the horizon."

pervect
Staff Emeritus
Note that this applies only for the static observer - i.e. the original quote is:

Click on the image at left (with the horizon grid) or right (without the horizon grid) for an animation of the appearance of the outside Universe as you lower yourself slowly to the horizon. The Universe appears brighter and brighter as you approach the horizon, tending to infinite brightness at the horizon. But again, no one with any sense would do this.
An observer free-falling through the black hole, or even an observer accelerating away from the black hole with a finite acceleration while falling through the event horizon, would not see the same infinite brightness. So it's a bit of a mistake to think of the infinite brightness as a property of the black hole.

Also note that an observer with infinite acceleration in a flat space-time would see the universe in a similar way. More precisely, an observer accelerating in a flat space-time (say with a rocketship) would also see the universe appear visually to abberate, approaching in the limit of infinite acceleration a single point of infinite brightness in front of the rocket ship.

So it's better to think of the infinite brightness as being due to the observer's acceleration than it is to think of it as being due to the black hole.