Did the Big Bang theory really came from exploding or expanding?

Question

I just found out in YouTube™ that the Big Bang theory is really expansion but my History teacher says that it is the exploding that caused the Big Bang theory... Any ideas?

Answer 1

Your history teacher needs to talk with an astrophysicist (or perhaps watch more YouTube).

An explosion is things spreading out into space. In the Big Bang, it is space that is spreading out.

Pretty freaky concept, huh?

Answer 2

There are many wrong notions about the Big Bang theory. We think that it is a big big and powerful explosion but actually it wasn't, it was (and continues to be) an expansion. Instead of appearing as a flash the universe expanded from its infinitesimally small size to its current size.
The singularity (the term which experts use for primitive universe at the big bang time) was not a point placed in space. The space didn't exist prior to the Big Bang. According to Stephen Hawking's calculations, both time and space surely had a finite beginning that corresponds to the origin of matter and energy. Minkowenski tells us that space and time can't exist on there own. Before occurence of space we can't talk about time. So, the singularity didn't appear in space, rather space began inside of the singularity. Prior to the singularity, nothing existed, not space, time, matter, or energy - nothing. We don't know how, where and in what did the singularity appear if not in space. All we really know is that we are inside it and at one time it didn't exist.
Also read the overview about the big bang and predicted series of events at the time of big bang here --http://en.wikipedia.org/wiki/Big_Bang

Moreover Big Bang isn't the only plausible theory but as per cosmic microwave background radiation it suffices the best.
http://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation
another link ::http://www.halos.com/reports/ext-2003-022.pdf
http://www.damtp.cam.ac.uk/user/gr/public/bb_pillars.html

Answer 3

An explosion is essentially the expansion of a chemical reaction or nuclear reaction that expands as the ingredients are consumed.
The expansion of the universe is the action of an expansion of space that is continually produced by the original space-time pulse that initiated the universe.
An expansion that accelerated to the speed of light and then continued at a constant rate.

Answer 4

The big bang happened because there was an infinitely dense singularity, not a particle or an atom. It was not an atom bomb, just an expansion of this singularity into something that had became our universe and had dimension.

Answer 5

The theory of the Big Bang came not from exploding and not from expanding.
The theory came from "rejecting".
It was only 50 years when this theory was put forward by scientists that meant that they must explain things as if there was no God capable to perform a creation.
The Big Bang theory was therefore coming from the attitude of rejecting God as a creator.

Answer 6

You are both correct.
There was an initial explosion.
Things flew outward.
Outward movement is expansion.

Answer 7

.The Big Bang never happened, you have been fooled

If you believe that all the matter in the Universe was once in a small object the size of a golf ball you will believe anything

Many unproven but accepted physics postulates should be taken with a pinch of salt because they have super strings attached.

For example,Professor Hawking also talks about material free space(pure vacuum) being subject to "curvature", sorry Professor, but if there is nothing there there is nothing to curve, you are good at maths though.

There is a big difference between cosmology and epistemology

Answer 8

maybe the explosion caused the expansion