Dark matter and dark energy.

[Tassadar]

New evidence about this very interesting issue. Link from berkley university ( yes in english).

link:http://www.lbl.gov/Science-Articles/Archive/Phys-HST-supernovae.html

Cosmology is a very active field of research and lead to some of the most important discovery in our time.


Edit: Extract from the link, my favorite.

While the case for the cosmological constant looks strong by comparison to these alternatives, many other exciting possibilities remain. Some even propose a cosmos in which our universe, having three dimensions of space, is afloat in a higher-dimensional world, with gravity free to interact among the dimensions.

Fascinating isnt it.

 

[Souron]

Indeed it is a very interesting subject.

One Question: What is the diffrence between cosmology and astro phisics?

 

[Tassadar]

Astrophysique rely on quantum level experience to explain univers. They use sychrotron collider and such device, thats why we are able to reach the 10 minus 43 second after big bang, they create very high energy phenomenea like colliding a near light speed helium nuclei with proton. These very high energy level simulate the after big bang.

Cosmologist rely on higher scale observation, like effect of gravity into galaxies's super cluster, supernova, quasar, neutron star, black hole and so on. IMO they rely mostly on telescope( and all the electromagnetic spectrum, like radio wave,x-ray,gamma ray) insteed of sub-atomic particule collider.

 

[Souron]

thanks, that was informative.