Gravity and the Big Bang

No, this is not an evolution vs creation thread. It is more of a brain convultion. Please correct any errors in my thinking before I develop a crazy idea.

So... what is a planet? Is it a giant clump of dirt with a gravitational pull? Well, such seems to be the obvious way of looking at it, but what about the other way around?

What keeps a planet together? What makes it a perfect circle? Gravity. So, without gravity, a planet wouldn't exist. And, on a much larger scale, the same force keeps our entire galaxy together. But what keeps gravity where it is?

The Big Bang is an interesting theory (one I don't necessary see as a fitting explanation, but whatever). Everything shrinked, everything spun, and everything broke apart into the worlds we have today. In order for this to work, for everything everywhere to fit in that little speck, there would have to be an extremely strong gravitational pull.

This could mean a few things:
1. The gravity couldn't break apart as the big bang suggests... or could it? But how?
2. There could be more to the universe, outside the gravitational pull of the "big bang". After all, the universe is infinite (theoretically) and I can't imagine an infinite gravitational pull would every happen naturally.
3. I'm completely wrong and my limited knowledge on gravity has caused me to ponder a problem solved long ago.

Rotaretilbo wrote:
The main question I have about the Big Bang theory is how absolutely everything can be condensed into a single point, and then explode out for no apparent reason and create the universe.

it was just energy that was created from "nothing". not mass. the energy then became mass.

We've already proven that Conservation of energy is not entirely true.


and to answer...OPs comments. when dust started to form in the early universe its exceptionally smaller gravitational pull started pulling it together with other specks and so on and so forth. eventually these specks would form either planets of stars pending on their atomic make up.

of course...stars were formed first since there was only hydrogen after the big bang, and the nuclear fusion in the stars is what created the other elements.

Baconsen wrote:Hmm, i'm not the most informed about this topic, but what about Dark Matter and Dark Energy? Don't they play a role in this stuff?

yup, but we don't really know much about dark matter

actually dark matter does exist and doesn't 'fill up the space'

science knows how dark matter SHOULD behave, and has found ways to theoretically find it based on that info.

Nocbl2 wrote:
Now, my question is: is dark matter sucked in by black holes, and does it have gravitational effect?

everything gets sucked into black holes and everything has gravitational effect.

even light gets sucked into black holes. hence why black holes are black. their actual color isn't black, but their gravity is so strong that light can't escape.

Black holes are what make our galaxy spin, and universe expand.