Gravity Probe B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of Albert Einstein's general theory of relativity

The 2004 Abel prize have been award for a theorem which states that the analytic and topological "indices" are equal for any elliptic differential operator on an n-dimensional compact differentiable C^infinitiy boundaryless manifold.

Inside you can find a large list with the 2004 news, ranging from "Wolf prize" to antibubbles

Scientists say that Albert Einstein's principle of the constancy of the speed of light holds up under extremely tight scrutiny, a finding that rules out certain theories predicting extra dimensions and a "frothy" fabric of space. Details in NASA and Science Daily

This issue includes two string related articles: The string-theory landscape on how String theorists have found a way to describe an accelerating universe by Fernando Quevedo, and Superstrings

The impressive results on solar neutrinos from the Sudbury Neutrino Observatory (SNO) have been awared with the Canada's most valuable science prize.

According to a new US Department of Energy road map, the top priorities for the next 20 years are: the Dark Energy Mission, the Linac Coherent Light Source, and a Protein Production and Tags Facility. The low priority for a new Linear Collider (13 in the list) is analysed on this New Scientist article.

Until few months ago, all the meson were understood as being biquarks or triquarks states. However, in past June, the first exotic baryon, the pentaquark, was discovered in Japan and confirmed in US. Now the Belle collaboration at the KEK laboratory in Japan has discovered which seem to be a tetraquark ( charm/anti-charm and up/anti-up)

The famous Bell's inequality of quantum mechanics has been tested in a high-energy particle physics experiment for the first time. The inequality was violated by three standard deviations in experiments with B mesons at the KEK laboratory in Japan

Recent problems with submitted papers to arXiv.org have raised question about the upload process