Read article 'Galaxy redefines reionization epoch'
Lyman alpha emission has been detected from a galaxy of redshift z = 6.56. If confirmed, this discovery pushes back the limits of when reionization could have occurred in the early universe. The dista...
Read article 'Helping the AMS experiment to detect antiparticles in space'
Particle physicists involved in the Alpha Magnetic Spectrometer (AMS) experiment are eagerly scanning data recorded during a December 2001 NASA space shuttle mission.
Read article 'The end of the universe may be frozen in time'
The long-term future of extragalactic astronomy could be dark and dreary, according to new theoretical research. Such a prediction might have not have been taken so seriously, had it not originated fr...
Read article 'DESY workshop combines gravity and particle physics'
Gravity and particle physics took centre stage at last year's DESY theory workshop. As chairman of the organizing committee Dieter Lüst reports, there was plenty to talk about.
Read article 'Quantum gravity comes in from the cold'
Gravity and quantum mechanics rarely mix in laboratory circles.
Read article 'Pierre Auger Observatory in action'
On a cold, clear night last May the shutters rolled away from the aperture window.
Read article 'ESA mission will study ultimate energies'
Joining the Pierre Auger Observatory in the long term will be ESA's Extreme Universe Space Observatory, which is scheduled to fly on the International Space Station from 2008.
Read article 'Milky Way reveals new information about the density of baryonic matter in the universe'
Ordinary matter composed of baryons - essentially protons and neutrons - is responsible for only a tenth of the gravitation observed in the universe.
Read article 'Cosmic Rays at Earth'
Lawrence Jones reviews in 2002 Cosmic Rays at Earth.
Read article 'X-rays come under the spotlight'
In 1999 two new X-ray satellites were launched – Chandra and XMM-Newton. Here we mark a few of their discoveries and show some of the X-ray images that are now available to astronomers. For the ...
