Are you a
Undoubtedly, I have a big stomach, it's just in my nature.
They can "eat" things
Nothing can escape me, my thirst atomic, considered a danger.
There is so much force that nothing, not even light can escape.
I'm bigger than most everything, does that mean I am fat?
The one in the center on the Milky Way is bigger than the sun I think?
Vain men may use me like a sling, can I be used like that?
El-Guest said that people with spaceships may want to use black holes as a source of energy.
Ever consuming, my insides unreachable.
They are large.
Release fuming, is how I'm born feasible
Maybe it releases waves?
So very dark, I seek for stability.
Black hole = dark hole
Effect my spark, you'll need volatility.
It means to use the gravity from the black hole to slingshot yourself to another place.
The first letter of each line spells UNIVERSE
Black holes are enormous and they do eat everything in their gravitational pull.