Age of the Universe and the big bang

[Pete]

https://www.facebook.com/share/v/doo4g6GRcUNSXGWw/

[Pete]

So we presently have no idea if the universe is expanding, when it started, when time began, or if the big bang actually occurred. It maybe always existed. Who knows at the moment.

Edited August 31 by Pete

[Seeker]

Clickbait nonsense!

 

See https://www.quantamagazine.org/the-beautiful-confusion-of-the-first-billion-years-comes-into-view-20241009/

for a description of the JWST results, and https://www.quantamagazine.org/standard-model-of-cosmology-survives-jwsts-surprising-finds-20230120/ for a discussion of the impact on the standard model.

 

The video has taken some early approximate results and extrapolated to "all cosmology is under threat".  Your comment then overstates even that!

 

There are challenging implications, particularly in the areas of galaxy formation and black holes, and there probably will  be revisions needed, but that is normal science, not a collapse.

 

There is plenty of well-confirmed evidence for the expanding universe. That in turn implies an origin, and there is a reasonable consensus on the timeframe involved (13.8 billion years).

 

In one sense you are correct - we do not know what happened, because we weren't there.. There are a lot of clues though, and by piecing together information from many different sources we have the standard model. It is regularly revised as new evidence comes to light. The result is a fair way away from having "no idea" about the history of the cosmos.