Read article 'Radio astronomers observe a possible dark-matter galaxy'
An international team of astronomers has discovered what appears to be an invisible galaxy made almost entirely of dark matter – the first ever detected. The mystery galaxy, VIRGOHI21, lies in t...
Read article 'Very High Energy Cosmic Gamma Radiation: A Crucial Window on the Extreme Universe'
Marc Türler reviews in 2005 Very High Energy Cosmic Gamma Radiation: A Crucial Window on the Extreme Universe.
Read article 'Missing baryons found in hot gas'
While it is well known that ordinary baryonic matter constitutes only about 5% of the total energy content of the universe, it is probably less commonly appreciated that about half of this “know...
Read article 'Particles meet cosmology and strings in Boston'
PASCOS 2004 is the latest in the symposium series that brings together disciplines from the frontier areas of modern physics.
Read article 'HESS provides new view of gamma-ray sky'
The first results from the HESS array of Cherenkov telescopes are introducing a new era in the study of very-high-energy cosmic gamma rays, as Werner Hofmann describes.
Read article 'Astroparticle physics and cosmology laboratory opens in Paris'
New Year's Day 2005 saw the official birth of the Laboratoire d'AstroParticule et Cosmologie (APC) in Paris.
Read article 'Signs that black holes swarm at galaxy centre'
A swarm of 10,000 black holes may be orbiting the Milky Way’s supermassive black hole. This estimate is based on theoretical expectations of the migration of black holes in our galaxy and the ob...
Read article 'Carbon sheds light on star creation'
New measurements of unstable nuclei caught in the act of decay have gone a long way towards resolving long-standing questions about the triple-alpha process that creates carbon nuclei.
Read article 'Does the motion of the solar system affect the microwave sky?'
A team from Case Western Reserve University in Cleveland, Ohio, and CERN has discovered surprising evidence that the largest-scale features of the microwave sky seem to be correlated with both the mot...
Read article 'Two dedicated satellites reveal the Earth’s pull on space-time'
The general relativistic prediction of the Lense-Thirring effect has been confirmed to a precision of less than 10%. The result was obtained by measurements of the position of two satellites over a pe...
