I love studying Cosmology - I get to study something where 96% of it is unknown! However, there is the possibility that scientists are closer to working out what Dark Matter is...
Mario, if your interest is Cosmology, then there is none better to explain it to you than Prof Geraint Lewis (USYD)
He is a frequent visitor to The Macarthur Astronomical Forum.
You may follow his blog HERE.
Cheers, John.
John,
Thanks for the link, it looks very interesting. I'm currently doing the Caltech Galaxies and Cosmology course through coursera.org. The lecturer is Prof. George Djorgovski and he really does a good job of explaining a rather cerebral subject!!