As reported in Nature Science Update, the European Astrophysical Virtual Observatory is scheduled to open today. For those not familiar with the project, it combines that power of 6 astronomy centers and makes data from all of them, including visual, gamma-ray, X-ray and radio-wave images of stars, galaxies, supernovae, black holes and gamma-ray busts available over the internet for astronmers to examine and cross-reference. This will also give us a more detailed view of the skies that ever before possible.
See also http://www.euro-vo.org/