I What would the universe look like without dark matter?

[Ranku]

How different would the universe look without dark matter? Would galaxies have formed, allowing for the existence of the solar system and life?

 

[Orodruin]

It is not sufficient to just say "without dark matter" because that does not specify what other things (if anything) you put into the Universe instead.

 

[Ranku]

It is not sufficient to just say "without dark matter" because that does not specify what other things (if anything) you put into the Universe instead.

With only visible matter, radiation, and cosmological constant present.

 

[Orodruin]

With only visible matter, radiation, and cosmological constant present.

Still not sufficient. You need to specify proportions.

 

[Ranku]

Still not sufficient. You need to specify proportions.

I guess the present proportion would be visible matter 5 % and dark energy 95 %.

 

[Arman777]

I guess the present proportion would be visible matter 5 % and dark energy 95 %.

You can try this one http://www.astro.ucla.edu/~wright/CosmoCalc.html