Is the Big Bang Misunderstood as an Explosion in Static Space?

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SUMMARY

The Big Bang is frequently mischaracterized as an explosion occurring in static 3D Euclidean space, a notion that is fundamentally incorrect. This misconception undermines the understanding of the Universe's homogeneous and isotropic expansion. The term "Big Bang" originated from Fred Hoyle, who opposed the theory, yet it has persisted in popular discourse. The discussion clarifies that the Big Bang refers to two distinct concepts: the speculative event at t=0 and the well-supported phenomena that followed, which are grounded in observational evidence.

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  • Familiarity with the concepts of homogeneous and isotropic expansion
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Imax
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The origin of our Universe (i.e. the Big Bang) is often considered as an explosion in static 3D Euclidian space:

http://youtu.be/R2Zi_z4n4c0

I think the Big Bang is somewhat of a misnomer. It’s not an explosion in static 3D Euclidian space. If this was the case, then it would difficult, if not impossible, to have homogeneous and isotropic expansion.
 
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Imax said:
The origin of our Universe (i.e. the Big Bang) is often considered as an explosion in static 3D Euclidian space

And that view is incorrect.

I think the Big Bang is somewhat of a misnomer.

The name Big Bang came from Fred Hoyle who was one of the leading opponents of the idea, but it sort of stuck.

One thing that I've found is that increasingly people are using it to mean two different things. The event at t=0 about which we have no information about and which is speculative, and what happened after t=0, of which we have a lot of information about and which is on very firm observational foundations.
 


Imax said:
The origin of our Universe (i.e. the Big Bang) is often considered as an explosion in static 3D Euclidian space:

http://youtu.be/R2Zi_z4n4c0

I think the Big Bang is somewhat of a misnomer. It’s not an explosion in static 3D Euclidian space. If this was the case, then it would difficult, if not impossible, to have homogeneous and isotropic expansion.

The Big Bang is not that.
 

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