Poll: The Big bang theory, Do you think its true?

[Lullabye]

EDIT: Thank you everyone who has posted on here.your teachings are much appreciated.
Now onto a new-ish topic.
Is gravity a property of matter or space?
And how exactly can we tell the universe is expanding?

 

[thiosk]

Anywho, now since our universe is filled with matter and all and its all attracting each other....it makes since it will all eventually come together right? Now all that matter and energy coming together can only mean one thing. A BFE(Big F@%#ing Explosion) I mean, just look at our earth or sun. Tell me matter and energy isn't volatile.
Now for the point.

I would suggest reading the wikipedia articles on the subjects of the big bang and the big crunch.

You have some major flaws with your understanding of the current science.

First; the big bang wouldn't even really be an explosion in any sense of the word that we understand. Space ITSELF is expanding BETWEEN pockets of matter. Since this expansion is accelerating (for some reason) there will likely be no big crunch.

The rest can be corrected by simply doing a little research.

 

[sms_117b]

I do think it to be true, and after having to study it for a presentation at University, many scientists believe the uniform 3K (3 Kelvin) radiation apparent across the whole Universe serves as a proof of sorts.

It's, for me, a very difficult concept to get across.

 

[disfunkybob]

Can light escape within the event horizon of a black hole? Nope. Most other energies require matter to propagate, so where matter goes so does energy.

Gravity decreases proportionally 1/r^2

Well...
I doubt that there was nothing before the Big Bang, because that breaks physical law.

Physical laws as they pertain to this universe perhaps. I myself kind of like the budding idea of the creation of the universe. Our universe came from a larger universe. Perhaps a universe where matter can spontaneously exist to fill these buds.

 

[NeutralDrow]

Of course. Our whole universe was in a hot dense state, then nearly fourteen billion years ago expansion started.

Wait...

 

[Lullabye]

Anywho, now since our universe is filled with matter and all and its all attracting each other....it makes since it will all eventually come together right? Now all that matter and energy coming together can only mean one thing. A BFE(Big F@%#ing Explosion) I mean, just look at our earth or sun. Tell me matter and energy isn't volatile.
Now for the point.

I would suggest reading the wikipedia articles on the subjects of the big bang and the big crunch.

You have some major flaws with your understanding of the current science.

First; the big bang wouldn't even really be an explosion in any sense of the word that we understand. Space ITSELF is expanding BETWEEN pockets of matter. Since this expansion is accelerating (for some reason) there will likely be no big crunch.

The rest can be corrected by simply doing a little research.

Research and me dont go well together. But seriously, space is expanding?.....hmmm that doesnt sound right....shouldnt it be matter is shrinking? ahhh! just reasoned a hole in that logic too...damn. I guess i really dont understand. off to wiki we go !
(p.s, thank you for being you. I admire smart people and/or random facts)

does that mean energy is also affected by gravity?

Yes, Einstein did work to show that light is affected by the gravity from bodies of matter.

And does gravity stop having an effect after a certain distance?

The further you are from the body of matter, the less its gravity affects you. That's why there's so little gravity in space.

i realize that, but does it ever completely stop? i know we dont really understand gravity and it's properties but do we know if it ever really stops?
and thanks for clarifying the energy thing.

 

[lostclause]

You've misunderstood it. It wasn't a bang, that was a name made up by detractors (people who believed in a steady state universe). It was an expansion from a singularity. Search up Red Shift for evidence of the big bang.

 

[Lullabye]

Can light escape within the event horizon of a black hole? Nope. Most other energies require matter to propagate, so where matter goes so does energy.

Gravity decreases proportionally 1/r^2

Well...
I doubt that there was nothing before the Big Bang, because that breaks physical law.

Physical laws as they pertain to this universe perhaps. I myself kind of like the budding idea of the creation of the universe. Our universe came from a larger universe. Perhaps a universe where matter can spontaneously exist to fill these buds.

ANd then begins the fun! an i hate alternate universes, the theories always confuse me in some way. It'll make sense at first then BLAM! throw in time agitation between semi-matter bonding's and im lost......

 

[Kollega]

Well. It sounds pretty sensible right now,so i run with it.

 

[Mozared]

I think the big bang theory has been blown out of proportion.

Seriously though, no, I don't think it's true. No matter how atheïstic or agnostic I am, I don't think the big bang theory is true. For as far as I know it, mind you. If anything, I think the universe has somehow slowly evolved over time rather than 'explodes' out of nothing.

Then again, I might have a completely wrong idea about what the big bang theory is.

 

[Lullabye]

You've misunderstood it. It wasn't a bang, that was a name made up by detractors (people who believed in a steady state universe). It was an expansion from a singularity. Search up Red Shift for evidence of the big bang.

I know. but that singularity contained within it all matter and energy.(or at least the makings of) as such does it not make sense that energy/matter of universe totaled is equal to the energy/matter of the singularity?

 

[dreadedcandiru99]

I'm no scientist either, but I do know that science tends to deal with likelihoods rather than outright declaring something true or false. I'm pretty sure a scientist would say that the Big Bang was probably what happened, given what we've learned so far, but that we're still working on it.

 

[CloakedOne]

well, the logic behind it seems fairly sound, so I'm willing to believe it for now.

 

[NeutralDrow]

You've misunderstood it. It wasn't a bang, that was a name made up by detractors (people who believed in a steady state universe).

 

[Calatar]

does that mean energy is also affected by gravity?

Yes, Einstein did work to show that light is affected by the gravity from bodies of matter.

And does gravity stop having an effect after a certain distance?

The further you are from the body of matter, the less its gravity affects you. That's why there's so little gravity in space.

It may be worth noting that the classical notion of newtonian gravity is incorrect, and that large bodies of matter bend space-time (fabric of the universe) around them, causing even massless photons to have an altered path of motion.
The newtonian model (while a fairly good approximation of gravity) claims that gravitational force is a property dependent on the mass of a point object (ie a massless photon would experience no gravitational force.) This is simpler to understand, and is typically taught first to give laypersons an idea of how gravity works. In this approximation, gravitational force is inversely proportional to the square of the distance between the point object and the source object. Essentially then, this gravitational force would extend throughout all space. This means that you are currently being attracted to every single other mass in the entire universe at the same time through gravitational attraction, but a close massive object like the earth has hundreds of thousands times more effect on you than even the sun, which has the mass of over 300,000 earths. Because of this, we treat very distant objects as having a negligible gravitational effect relative closer massive objects.

 

[Mr.Black]

And does gravity stop having an effect after a certain distance?

No.

And on topic, I guess I believe it. There's evidence there to support the theory (red shift, etc).

 

[zehydra]

The problem with the big bang theory, is that we can't tell that the Universe is expanding or shrinking because we can't see the whole universe. Light does die out at a certain point.