Since the big-bang was the univers able to expand with buddings ?

Question

I mean not on a perfect linear speed, thinking that kind of "frictions" and black holes may interfer "locally" (here or there) correcting the general speed theory.

Answer 1

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The universe is not homogeneous.
It is lumpy , with clumps, strings ,and trailers.

Generally, it must have been like aerial fireworks.
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You can easily describe this as budding.

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Answer 2

the scale of the expansion is huge, the black holes have nothing on it, even one of the biggest black hole Sagittarius A West, wouldn't do anything. Then again there is a lot of messed up things to do with the universe, like dark matter. and the properties of black holes, so maybe....

Answer 3

after one thirty-billionths of a second the universe reached a radial velocity of the speed of light.
As it reached a maximum size it began to slow down.
The universe is a quantum entity so it is not perfect,giving rise to the quantum effect that caused it to evolve into what we experience to-day.

Answer 4

Are you asking why gravity doesn't pull the universe back together. That is a mystery called dark energy.