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Rare galaxies shed light on a dark universe

Researchers based at the Institute for Computational Cosmology (ICC) in Durham and at Caltech in California, have found striking proof that their computer simulations of the universe can accurately predict how galaxies are clustered, so helping to reveal the distribution of dark matter throughout the universe. Using a computer simulation to follow the formation and evolution of galaxies in a universe filled with dark energy and dark matter, they predicted that the most luminous galaxies should be ass

Quark star glimmers

Astronomers may have discovered a strange new form of matter.

Astronomers think they might have spotted a quark star, a mass of fundamental particles only a few kilometres across but weighing more than our Sun. If the star’s nature is confirmed, it would be the first example of this state of matter.

Theoreticians hypothesized the existence of quark stars in the 1980s. Today, NASA announced the discovery of such a star, based on results from their space telescope the Chandra

Quasars help trace ancestors of giant elliptical galaxies

By using the Hubble Space Telescope (HST) as a `time machine`, astronomers from the Universities of Edinburgh and Oxford in the UK and the Space Telescope Science Institute (STScI) in Baltimore in the USA have been able to trace back the history of massive elliptical galaxies. They have found that galaxies of this kind, which still exist today, were already luminous families of stars about 10 billion years ago when the universe was only one third its present age. Their latest observations suggest tha

Scientists step up search for BSE test

Research aimed at finding new diagnostic tests for BSE is gathering momentum at the Institute of Grassland and Environmental Research (IGER), where scientists have won a major research contract worth over £500,000 from the Department for Environment, Food and Rural Affairs (DEFRA).

`The new contract will help us expand our search for biochemical markers associated with BSE and scrapie,` said Professor Mike Theodorou, one of the leaders of the four-year programme. His colleague, Dr Gordon All

Bacteria change ‘fingerprints’ and baffle detectives

Tracing the source of a campylobacter food poisoning outbreak can be very difficult even with modern DNA fingerprinting methods. There is now evidence that campylobacters can rearrange their DNA, disguising their fingerprint, and confusing such detective work, scientists heard today (Tuesday 09 April 2002) at the spring meeting of the Society for General Microbiology at the University of Warwick.

Professor Diane Newell and her colleague Dr Anne Ridley of the Veterinary Laboratories Agency sa

Lopsided feet signal birds’ demise

Asymmetric bodies fuel arguments over ecological risk.

Birds with one foot bigger than the other are showing signs of stress, say Belgian ecologists. The study backs the controversial idea that measuring body asymmetries could signal that a species is at risk.

Researchers at the University of Antwerp measured the feet of taita thrushes from three remaining pockets of their native forest in Kenya. Those from the most disturbed area showed eight times more difference between t

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