Astronomers discover possible 10th planet
A planet larger than Pluto has been discovered orbiting the Sun at more than three times the current distance from the Sun to Pluto. It is a clear member of the Kuiper belt of objects beyond the orbit...
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A planet larger than Pluto has been discovered orbiting the Sun at more than three times the current distance from the Sun to Pluto. It is a clear member of the Kuiper belt of objects beyond the orbit...
The existence of powerful quasars at high redshift raises the question of the rapid formation of supermassive black holes. How could early black holes accrete 1 billion solar masses in less than 1 bil...
On 27 December 2004, one day after the devastating tsunami in the Indian Ocean, the Earth was illuminated by the biggest splash of light ever recorded from outside the solar system. For 0.2 s, th...
The first detailed image of the central part of our galaxy at very-high-energy gamma rays shows several sources.
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...
Marc Türler reviews in 2005 Very High Energy Cosmic Gamma Radiation: A Crucial Window on the Extreme Universe.
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...
PASCOS 2004 is the latest in the symposium series that brings together disciplines from the frontier areas of modern physics.
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.
New Year's Day 2005 saw the official birth of the Laboratoire d'AstroParticule et Cosmologie (APC) in Paris.