90 Billion Light Years --Evolution of Dark Matter in the Observable Universe (Video)

 

          

 

Jean-Michel Alimi from the French National Centre for Scientific Research (CNRS) and colleagues from the DEUS consortium, created a model of the evolution of dark mattter that covers 90 billion light years, which is the size of the universe that we are able to see, and follows 550 billion particles the mass of our Milky Way.

The simulation traces the evolution of dark matter as predicted by the standard model of cosmology, from the time the universe was in its infancy to the present. It mimics gravitational forces between all the clumps and the fact that they are moving in an expanding universe.

"These simulations concern only gravity and dark matter," says Pier-Stefano Corasaniti, a member of the team. "But I think the performance of the algorithms are becoming efficient enough to run simulations that include baryonic gas or dark energy fluid itself."

 

 

 

TheDaily Galaxy via DEUS and newscientist

Comments

[George Botha]

Fascinating stuff. Does this imply that the Big Bang happened after all? The Big Bang happened after everything has already happened? Aren't we just lucky to be alive?

[George Botha]

Fortunately and / or unfortunately it seems that the always relevant Daily Galaxy news is fluxing in at such a tempo currently that "us commenters" cannot keep up between eating our porridge and brushing our teeth.

We don't really expect persons to comment in the archive state of the cosmological news reports. But this is what's already happening.

Those still responding must be really interested or following up on a specific topic. We are obviously getting thinner on the ground but I just hope and believe that we are not getting less in absolute numbers ....

[Narendra Nath]

90 billion years compared to 14 billion years life of our universe! Thus, dark matter existence precedes our universe through Big Bang. Does it mean that steady state theory of universe is valid as pre=existing universe had given rise to our present universe....But dark matter is non-bayonic while visible matter is baryonic!

[Andy Findlay]

Just another TDG screw-up.
"90 billion light years, which is the size of the universe that we are able to see."
Editor's Comment: this is a statement of fact provided by Jean-Michel Alimi from the French National Centre for Scientific Research (CNRS) and colleagues from the DEUS consortium. They perhaps might know more about the subject than Andy Findlay.

[Singaporistu]

90 billion light years is correct according with the current big bang model (which might or not be correct). According to the model, space inflated much faster than speed of light and in about 500k years reached the size that we see now: 14 bil ly away hence 14 y old galaxies. But the expansion of space continued since 14 bil year ago and they calculated that current size is 90bil ly.

In the current model there are some fishy explanations on how space initially inflated extraordinary fast, then slowed for a while then accelerated again, because if continued the initial acceleration now will be billions of billions bigger.

Setting that aside, the big bang theory might fall one day as the number of scientist which have a different opinion increase, due to: possible gaps or unconsidered phenomenons in the red shift and CMBR cooling calculations, gamma observations of possible 10 times more galaxies beyond the 14 billion light horizon, inconsistencies and red shift inter-dependencies in the model calculations, invented dark energy, astronomy observations of linked galaxies / quasars with different red shift etc.

There are few candidate models and theories but they didn't acquired yet enough support in the scientific community, but the only way to challenge the big bang I guess would be if we take gamma ray pictures with super longer exposure(more than one month) and detect formed galaxies beyond the 15 billion limit.

check out "the big bang that never happen" on YouTube

http://scs-inc.us/Other/QuickDisclosure/?top=9570

[Narendra Nath]

Singaporistu speculations require further endorsements and confirmation by cosmic experimental data!

[sri lankan food and recipes]

oww this is my favorite subject, it's grade

[Josh Tao]

Dark Mather is really interesting topic.