Archive for 'Space'

Record-setting laser may aid searches for Earthlike planets

Posted on 08. May, 2008 by admin.

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Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology (NIST) have demonstrated an ultrafast laser that offers a record combination of high speed, short pulses and high average power. The same NIST group also has shown that this type of laser, when used as a frequency comb—an ultraprecise [...]

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Largest transiting extrasolar planet found around a distant star

Posted on 06. Aug, 2007 by admin.

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Flagstaff, Ariz. – An international team of astronomers with the Trans-atlantic Exoplanet Survey announce today the discovery of TrES-4, a new extrasolar planet in the constellation of Hercules. The new planet was identified by astronomers looking for transiting planets – that is, planets that pass in front of their home star – using a network [...]

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Monster galaxy pileup sighted

Posted on 06. Aug, 2007 by admin.

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New Haven, Conn. — Four galaxies are slamming into each other and kicking up billions of stars in one of the largest cosmic smash-ups ever observed.
The clashing galaxies, spotted by NASA’s Spitzer Space Telescope and the WIYN Telescope, will eventually merge into a single, behemoth galaxy up to 10 times as massive as our own [...]

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Study supports notion that Mars once had ocean

Posted on 13. Jun, 2007 by admin.

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Past tilt of planet’s spin axis could explain anomalous shoreline Berkeley — A paper in this week’s issue of Nature by University of California, Berkeley, geophysicists demolishes one of the key arguments against the past presence of large oceans on Mars.
Even from Earth, a large plain surrounding the planet’s north pole looks like a sediment-filled ocean [...]

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Free from the atmosphere

Posted on 12. Jun, 2007 by admin.

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Laser Guide Star System on ESO’s VLT starts regular science operationsAn artificial, laser-fed star now shines regularly over the sky of Paranal, home of ESO’s Very Large Telescope, one of the world’s most advanced large ground-based telescopes. This system provides assistance for the adaptive optics instruments on the VLT and so allows astronomers to obtain [...]

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HiRISE releases 1,200 images, launches viewer tool on Web site

Posted on 05. Jun, 2007 by admin.

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Anyone connected by Internet can now see planet Mars better than at any time in history, through the eye of HiRISE, the most powerful camera ever to orbit another planet.A University of Arizona-based team that runs the High Resolution Imaging Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter has just released more than 1,200 Mars [...]

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University of Michigan astronomers capture the first image of surface features on a sun-like star

Posted on 01. Jun, 2007 by admin.

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ANN ARBOR, Mich.-University of Michigan astronomers combined light from four widely separated telescopes to produce the first picture showing surface details on a sun-like star beyond our solar system.The image of the rapidly rotating, hot star Altair is the most detailed stellar picture ever made using an innovative light-combining technique called optical interferometry, said U-M [...]

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Old idea spawns new way to study dark matter

Posted on 31. May, 2007 by admin.

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COLUMBUS, Ohio — An international team of astronomers led by Ohio State University has examined dark matter in the outer reaches of our galaxy in a new way.
For the first time, they were able to employ triangulation — a method rooted in ancient Greek geometry — to estimate the location of dark matter and calculate [...]

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Galaxy cluster takes it to the extreme

Posted on 31. May, 2007 by admin.

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Evidence for an awesome upheaval in a massive galaxy cluster was discovered in an image made by NASA’s Chandra X-ray Observatory. The origin of a bright arc of ferociously hot gas extending over two million light years requires one of the most energetic events ever detected.The cluster of galaxies is filled with tenuous gas at [...]

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