Gravity

[baalboy5]

Universe is constantly expanding and some believe it will keep expanding or will eventually collapse on itself.

 

We don't know that. That's just a common theory that holds a tiny bit more evidence.

 

 

 

I once followed the idea of Nadril. If you didn't believe in gravity, it would be gone.

 

 

 

Oh, wait, I still do. See you guys 200 feet in the air! :twss:

 

We all believe in gravity, I'm just asking WHAT is it, what it made off, why, how, where the energy ect...

 

It's obvious gravity exists, it just that it so danm hard to explian

[demonfirzen]

Whats at the end of the universe? A wall? and whates behind that wall?

 

I've thought about this, my explanation can only be described as a honeycomb. Each of the hexagons of this honeycomb is the same universe. So if we (theoretically) hit the edge of the universe, we'd be at the opposite side of that universe.

[Lenticular_J]

We all believe in gravity, I'm just asking WHAT is it, what it made off, why, how, where the energy ect...

 

It's obvious gravity exists, it just that it so danm hard to explian

 

Well, guess I'll dip into my slight knowledge of this stuff. Matter sort of wants to be together. But, when near something as massive as a planet, everything is just drawn towards the ground of the planet/moon/whatever. I believe that theoretically, a fat person could cause enough gravity for an atom or two to become their satellite in vacuum. Of course, everything will be pulled into gravity wells like the centers of galaxies. Massive clumps of stars that may be less than AUs apart, from our educated guesses.

[EdgedThesis]

Whats at the end of the universe? A wall? and whates behind that wall?

 

I've thought about this, my explanation can only be described as a honeycomb. Each of the hexagons of this honeycomb is the same universe. So if we (theoretically) hit the edge of the universe, we'd be at the opposite side of that universe.

 

 

 

I've always thought it to be empty space. Completely dark, as no light has gotten to it yet.

 

Just infinite blackness is what is beyond our Universe.

 

 

 

As soon as light reaches this vacuum, it becomes a part of our Universe, since our Universe is just all matter and energy existent. So I also think that the Universe will just expand forever.

[Lenticular_J]

I've always thought it to be empty space. Completely dark, as no light has gotten to it yet.

 

Just infinite blackness is what is beyond our Universe.

 

 

 

As soon as light reaches this vacuum, it becomes a part of our Universe, since our Universe is just all matter and energy existent. So I also think that the Universe will just expand forever.

 

I kind of understand why it would be dark, but not completely. Why is space dark? It's black every color being reflected, thus space should be white?

[fastortoise]

Gravitons, which is really nothing more than a guess since no one has ever observed one.

 

 

 

Maybe we will get an explanation in oh, 5 or so days?

 

http://public.web.cern.ch/public/en/LHC/LHC-en.html

 

 

 

Assuming we all don't get consumed into strange-matter :P

[EdgedThesis]

I've always thought it to be empty space. Completely dark, as no light has gotten to it yet.

 

Just infinite blackness is what is beyond our Universe.

 

 

 

As soon as light reaches this vacuum, it becomes a part of our Universe, since our Universe is just all matter and energy existent. So I also think that the Universe will just expand forever.

 

I kind of understand why it would be dark, but not completely. Why is space dark? It's black every color being reflected, thus space should be white?

 

 

 

What? Sorry, I didn't understand you.

 

 

 

I'd think it'd be dark because it's an absence of all things. All light,all color.

 

 

 

Absence of a color is black, right?

[Guest]

I've always thought it to be empty space. Completely dark, as no light has gotten to it yet.

 

Just infinite blackness is what is beyond our Universe.

 

 

 

As soon as light reaches this vacuum, it becomes a part of our Universe, since our Universe is just all matter and energy existent. So I also think that the Universe will just expand forever.

 

I kind of understand why it would be dark, but not completely. Why is space dark? It's black every color being reflected, thus space should be white?

 

 

 

What? Sorry, I didn't understand you.

 

 

 

I'd think it'd be dark because it's an absence of all things. All light,all color.

 

 

 

Absence of a color is black, right?

 

 

 

Yup. Close your eyes, no lights get to em. Its black :o

[baalboy5]

I've always thought it to be empty space. Completely dark, as no light has gotten to it yet.

 

Just infinite blackness is what is beyond our Universe.

 

 

 

As soon as light reaches this vacuum, it becomes a part of our Universe, since our Universe is just all matter and energy existent. So I also think that the Universe will just expand forever.

 

I kind of understand why it would be dark, but not completely. Why is space dark? It's black every color being reflected, thus space should be white?

 

 

 

What? Sorry, I didn't understand you.

 

 

 

I'd think it'd be dark because it's an absence of all things. All light,all color.

 

 

 

Absence of a color is black, right?

 

 

 

Yup. Close your eyes, no lights get to em. Its black :o

 

No light yes but in theory black is a color. So your seeing black, a color.

 

blind people don't see color tho

[Lenticular_J]

What? Sorry, I didn't understand you.

 

 

 

I'd think it'd be dark because it's an absence of all things. All light,all color.

 

 

 

Absence of a color is black, right?

 

Nuh uh, absence of all color is white. But I think vacuum is black because it's the absence of everything, maybe.

[EdgedThesis]

I'm pretty sure black isn't a color.

 

 

 

A black cube is absorbing light in every possible wavelength. It's like a hole in the middle of a well lighted room, sucking up (not really) light. Since there is no light being reflected off of it, you see nothing. Just blackness. Absence of light. Nada.

 

 

 

A white cube is the exact opposite. Light from every possible wavelength bounces off of it and into your eyes. You are seeing all the colors of the visible light spectrum simultaneously.

 

 

 

Black= Absence of color. Blind people can't see color, they see only blackness.

 

 

 

White= Presence of all colors.

[Cyco_Reborn]

My much simpler explanation: The universe is all for hugs.

 

I agree!!!

[No_99_Melee]

His invisible noodly appendage pushes everything downward

 

 

 

Ra-men

[baalboy5]

His invisible noodly appendage pushes everything downward

 

 

 

Ra-men

 

O crap religion.

[Lenticular_J]

I'm pretty sure black isn't a color.

 

 

 

A black cube is absorbing light in every possible wavelength. It's like a hole in the middle of a well lighted room, sucking up (not really) light. Since there is no light being reflected off of it, you see nothing. Just blackness. Absence of light. Nada.

 

 

 

A white cube is the exact opposite. Light from every possible wavelength bounces off of it and into your eyes. You are seeing all the colors of the visible light spectrum simultaneously.

 

 

 

Black= Absence of color. Blind people can't see color, they see only blackness.

 

 

 

White= Presence of all colors.

 

I should have payed better attention in art #-o

[gauper_kid]

I don't know what it is.... why don't you ask isaac newton? I think he invented it. Or was that galileo?

[assassin_696]

 

Just a little extra fact, gravitational energy is "negative" versus the "positive" mass and other forms of energy. It's been calculated that the total energy sum for the Universe comes to zero, since the positive mass energy cancels out with the negative gravitational energy. Overall, there is no energy in the Universe.

 

 

 

just a thought on this

 

 

 

assuming that to be true, that would strongly support the rubber band theory along with the thought that the universe has/will undergo an infinite series of big bangs forming expanding universes that eventually slow down retract into a single point which causes the next big bang and so on?

 

 

 

 

 

Would it? How so? I'm not so hot on the cyclic big bang model ever since I heard that the the Universe is expanding at an accelerating rate, i.e. it doesn't look like it's going to retract into any kind of crunch. I need to read more about it though.

[EdgedThesis]

 

Just a little extra fact, gravitational energy is "negative" versus the "positive" mass and other forms of energy. It's been calculated that the total energy sum for the Universe comes to zero, since the positive mass energy cancels out with the negative gravitational energy. Overall, there is no energy in the Universe.

 

 

 

just a thought on this

 

 

 

assuming that to be true, that would strongly support the rubber band theory along with the thought that the universe has/will undergo an infinite series of big bangs forming expanding universes that eventually slow down retract into a single point which causes the next big bang and so on?

 

 

 

 

 

Would it? How so? I'm not so hot on the cyclic big bang model ever since I heard that the the Universe is expanding at an accelerating rate, i.e. it doesn't look like it's going to retract into any kind of crunch. I need to read more about it though.

 

 

 

I haven't read up on it, but a possibility is that the outer elements of our galaxy are in constant revolution around the center, even as they accelerate outwards. Well, at least i think it is.

 

 

 

That way, when two elements (Galaxies, I guess. Or superclusters. I dunno.) of our Universe collide in their revolution, it could start a gravitational chain reaction that makes it crunch.

 

 

 

I just made this up, don't put too much stock in it.

[mmmcannibalism]

 

Just a little extra fact, gravitational energy is "negative" versus the "positive" mass and other forms of energy. It's been calculated that the total energy sum for the Universe comes to zero, since the positive mass energy cancels out with the negative gravitational energy. Overall, there is no energy in the Universe.

 

 

 

just a thought on this

 

 

 

assuming that to be true, that would strongly support the rubber band theory along with the thought that the universe has/will undergo an infinite series of big bangs forming expanding universes that eventually slow down retract into a single point which causes the next big bang and so on?

 

 

 

 

 

Would it? How so? I'm not so hot on the cyclic big bang model ever since I heard that the the Universe is expanding at an accelerating rate, i.e. it doesn't look like it's going to retract into any kind of crunch. I need to read more about it though.

 

 

 

well the basis for my thought on that is that if the universe didnt cycle it would have disappeared an infinite amount of time ago. Also since there has always been the matter there is now it has to have been doing something pre big bang

 

 

 

as to the spreading of the universe accelerating Id say that either everything is still riding the big bang shockwave which will run out of energy eventually or its dark energy as some theorize causing this which will also eventually run out. Then gravity will very slowly bring the expansion to a halt and begin to pull everything together

[EdgedThesis]

 

Just a little extra fact, gravitational energy is "negative" versus the "positive" mass and other forms of energy. It's been calculated that the total energy sum for the Universe comes to zero, since the positive mass energy cancels out with the negative gravitational energy. Overall, there is no energy in the Universe.

 

 

 

just a thought on this

 

 

 

assuming that to be true, that would strongly support the rubber band theory along with the thought that the universe has/will undergo an infinite series of big bangs forming expanding universes that eventually slow down retract into a single point which causes the next big bang and so on?

 

 

 

 

 

Would it? How so? I'm not so hot on the cyclic big bang model ever since I heard that the the Universe is expanding at an accelerating rate, i.e. it doesn't look like it's going to retract into any kind of crunch. I need to read more about it though.

 

 

 

well the basis for my thought on that is that if the universe didnt cycle it would have disappeared an infinite amount of time ago. Also since there has always been the matter there is now it has to have been doing something pre big bang

 

 

 

as to the spreading of the universe accelerating Id say that either everything is still riding the big bang shockwave which will run out of energy eventually or its dark energy as some theorize causing this which will also eventually run out. Then gravity will very slowly bring the expansion to a halt and begin to pull everything together

 

 

 

Doesn't gravity have a finite sphere of influence though? What if a certain galaxy is beyond the influence of core clusters?

 

 

 

Well, it wouldn't matter. Maybe there are galaxies floating around out there that weren't caught by the last crunch cycle.

 

 

 

But if that's true, it means that this cycle will eventually end, and the Universe WILL continually expand.

[mmmcannibalism]

I dont believe gravity has a finite sphere, im sure after a certain distance it becomes nearly nothing but you have to consider that any fraction of the entire universe's gravity is going to be strong.

 

 

 

I guess the only proof for the fact the universe isnt constantly expanding is that it is still around. My whole thought we have cycles meaning that if it could expand forever one of the other cycles in the past infinite amount of time would have spread out to the point of nothingness

[EdgedThesis]

Or maybe we are just lucky enough to have come into existence while the Universe was still... "congested."

 

 

 

I really have to read up on this more.

[doomy]

I don't know what it is.... why don't you ask isaac newton? I think he invented it. Or was that galileo?

 

I'm pretty sure Gravity existed before it was discovered :P

 

And I think it was Newton.

 

 

 

I'd so try to contribte to this discussion, but I'd just look like an idiot.

[mmmcannibalism]

Or maybe we are just lucky enough to have come into existence while the Universe was still... "congested."

 

 

 

I really have to read up on this more.

 

 

 

reasonable thought

 

 

 

the problem even I have understanding my cycle thing is that it is really hard to imagine time as having gone back forever, if it were possible for the universe to spread out to nothing it would have already happened an infinite amount of time ago, thus making it impossible for us to be here if that were true

[thrash-boy]

I dont believe gravity has a finite sphere

 

 

 

agreed. just as i said before every time i jump up in the air the earth would move towards me at such a incredibly tiny rate that it will probably never be able to be measured before i am forced back to the ground by our earths much larger mass.

 

 

 

In other words, one lot of mass that has accumulated in the big crunch may be at the complete other side of the universe to another big lot of mass. It may take a trillion billion million years for the very tiny bit of gravity that would be working on both the mass's to bring them together to actual get to the point where they are together, but it would eventually happen.