The Big Bang expansion.

[Peron]

I hear people say that the big bang wasn't big or a bang, they say it was a expansion of space-time. But you can say that a explosion is a rapid expansion of hot gas and flame.....

 

I know that space-time expanded faster than light, but what about all the energy? How fast did it expand?

[ajb]

Energy is a property of "stuff". So I do not think your question is well-posed.

[Spyman]

I hear people say that the big bang wasn't big or a bang, they say it was a expansion of space-time. But you can say that a explosion is a rapid expansion of hot gas and flame.....

 

I know that space-time expanded faster than light, but what about all the energy? How fast did it expand?

An explosion is a rapid increase in volume of matter and release of energy inside space, but that is not what the Theory of Big Bang is about.

 

"The Big Bang is not an explosion of matter moving outward to fill an empty universe."

http://en.wikipedia.org/wiki/Big_bang

 

"The metric expansion of space is the averaged increase of metric (i.e. measured) distance between distant objects in the universe with time.

 

It is an intrinsic expansion—that is, it is defined by the relative separation of parts of the universe and not by motion "outward" into preexisting space. (In other words, the universe is not expanding "into" anything outside of itself)."

http://en.wikipedia.org/wiki/Metric_expansion_of_space

 

Depending on distance, the amount of space between us and the observed object, is still today increasing with more than a lightyear per year.

 

"For distances D larger than the radius of the Hubble sphere r_HS objects recede at a rate faster than the speed of light:

[math]r_{HS}=\frac{c}{H_0}[/math] "

 

"Redshift can be measured by determining the wavelength of a known transition, such as hydrogen α-lines for distant quasars, and finding the fractional shift compared to a stationary reference. Thus redshift is a quantity unambiguous for experimental observation."

"The redshift z often is described as a redshift velocity, which is the recessional velocity that would produce the same redshift if it were caused by a linear Doppler effect (which, however, is not the case, as the shift is caused in part by a cosmological expansion of space, and because the velocities involved are too large to use a non-relativistic formula for Doppler shift). This redshift velocity can easily exceed the speed of light."

http://en.wikipedia.org/wiki/Hubble%27s_law

 

 

Are you asking how fast energy does expand in the context of Big Bang ?

Energy gets brought apart togheter with matter during the expansion and is still being "carried" away from us. Depending of when and distance the receding velocities for objects will be very different.

If answering with the CMBR it was emitted from objects moving away from us with ~57 times ligtspeed ~13.7 billion years ago and those objects are today ~45.5 billion lightyears away and receding from us now with the speed of ~3.3 times lightspeed.

 

"In cosmology, cosmic microwave background (CMB) radiation (also CMBR, CBR, MBR, and relic radiation) is a form of electromagnetic radiation filling the universe. With a traditional optical telescope, the space between stars and galaxies (the background) is pitch black. But with a radio telescope, there is a faint background glow, almost exactly the same in all directions, that is not associated with any star, galaxy, or other object. This glow is strongest in the microwave region of the radio spectrum, hence the name cosmic microwave background radiation. The CMB's discovery in 1964 by radio astronomers Arno Penzias and Robert Wilson was the culmination of work initiated in the 1940s, and earned them the 1978 Nobel Prize.

 

The CMBR is well explained by the Big Bang model – when the universe was young, before the formation of stars and planets, it was smaller, much hotter, and filled with a uniform glow from its white-hot fog of hydrogen plasma. As the universe expanded, both the plasma and the radiation filling it grew cooler. When the universe cooled enough, stable atoms could form. These atoms could no longer absorb the thermal radiation, and the universe became transparent instead of being an opaque fog. The photons that existed at that time have been propagating ever since, though growing fainter and less energetic, since the exact same photons fill a larger and larger universe. This is the source for the term relic radiation, another name for the CMBR.

http://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation

[Peron]

Energy is a property of "stuff". So I do not think your question is well-posed.

 

Since, their was no matter in the first birth of the universe, I used a word that is associated with power 'energy'.