Last updated on April 16, 2014 at 1:21 EDT

Latest XMMXCS 2215-1738 Stories

2012-06-12 12:26:56

Japanese astronomers say they have discovered the oldest and most distant galaxy in the universe using a telescope on the Big Island of Hawaii, a finding that challenges other “earliest galaxy” claims. Using the Subaru and Keck Telescopes at Mauna Kea, the group said their galaxy, called SXDF-NB1006-2, has a distance of 12.91 billion light years from Earth, or more than 77 trillion billion miles away. Reporting in the Astrophysical Journal, the National Astronomical...

2011-03-09 13:50:51

Astronomers working with data from several observatories, including ESA's XMM-Newton, have discovered the most distant, mature galaxy cluster yet. The cluster is seen as it was when the Universe was only about a quarter of its current age. In contrast to other structures observed in the young Universe, this object is already in its prime, as is evident from its diffuse X-ray emission and evolved population of galaxies. This shows that fully-grown galaxy clusters were already in place this...

2010-04-28 11:15:00

One of the teams behind ESA's XMM-Newton X-ray mission has unveiled the latest edition of their 2XMM catalogue. The newest incarnation boasts an additional 42,000 entries, ratcheting up the total to over a quarter of a million X-ray sources. This unprecedented cosmic X-ray library is a valuable resource allowing astronomers to explore the extreme Universe. This latest edition of the 2XMM catalogue, an unrivalled storehouse of information on X-ray sources, is the largest ever assembled. It is...

2009-12-10 16:25:00

Mission's decade of success peering into the final frontier XMM-Newton, the most powerful X-ray observatory ever built and launched into space, marks its 10th anniversary on December 10th. XMM-Newton's observations have revolutionized the way we view the hottest and most extreme regions of the Universe. Scientists from the UK who have played a pivotal role in the success of the orbiting observatory, which is the size of a small bus, will be marking the occasion at a special event in Madrid...

2008-08-26 01:25:00

ESA's orbiting X-ray observatory XMM-Newton has discovered the most massive cluster of galaxies seen in the distant Universe until now. The galaxy cluster is so big that there can only be a handful of them at that distance, making this a rare catch indeed. The discovery confirms the existence of dark energy. The newly-discovered monster, known only by the catalogue number 2XMM J083026+524133, is estimated to contain as much mass as a thousand large galaxies. Much of it is in the form of...

2008-07-18 09:05:00

XMM-Newton has discovered an exploding star in the Milky Way. Usually that would be important in itself, but this time there is a special twist. Calculations show that the explosion must have been clearly visible to the unaided eye but was missed by the legions of star watchers around the planet. On October 9, 2007, ESA's orbiting X-ray observatory XMM-Newton was turning from one target to another. As it did so, it passed across a bright source of X-rays that no one was expecting. The source...

2007-12-14 07:47:44

Astronomers working with XMM-Newton have discovered a new cluster of galaxies, hidden behind a previously identified cluster of galaxies. The recently exposed cosmic giant is apparently just as bright as the first group, but is six times further away. The discovery was made by an international team using ESA's orbiting X-ray observatory. Being fooled by a cosmic giant is no laughing matter for an astronomer. For years, astronomers racked their brains over the relation between two regions...

2006-06-12 09:28:25

Thanks to data from ESA's XMM-Newton X-ray satellite, a team of international scientists found a comet-like ball of gas over a thousand million times the mass of the sun hurling through a distant galaxy cluster over 750 kilometres per second. This colossal 'ball of fire' is by far the largest object of this kind ever identified. The gas ball is about three million light years across, or about five thousand million times the size of our solar system. It appears from our perspective as a...

2005-08-31 12:35:00

ESA -- ESA's X-ray observatory, XMM-Newton, has for the first time allowed scientists to study in detail the formation history of galaxy clusters, not only with single arbitrarily selected objects, but with a complete representative sample of clusters. Knowing how these massive objects formed is a key to understanding the past and future of the Universe. Scientists currently base their well-founded picture of cosmic evolution on a model of structure formation where small structures form...