Day: June 30, 2011

Solar ghosts may haunt Earth’s radioactive atoms

24 June 2009 by Justin Mullins It’s 1986, and there’s a puzzle on Dave Alburger’s desk. Not Ernö Rubik’s latest toy, but the data from a four-year experiment to measure the half-life of the rare radioactive isotope silicon-32. On one level, the numbers fit together just fine, adding up to a half-life of 172 years, …

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Shedding light on the cosmic skeleton – Popular Mechanics

Astronomers have tracked down a gigantic, previously unknown assembly of galaxies located almost seven billion light-years away from us. The discovery, made possible by combining two of the most powerful ground-based telescopes in the world — ESO’s Very Large Telescope and NAOJ’s Subaru Telescope — is the first observation of such a prominent galaxy structure …

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September astronomy notes – by John Saunders

1. Betelgeuse resolved The sharpest image ever of Betelgeuse shows a mammoth star that is slowly evaporating. A recent image from the Very Large Telescope in Chile resolves not only the face of Betelgeuse, but a large and previously unknown plume of surrounding gas. This plume gives fresh indications of how the massive star is …

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Scientists create first comprehensive computer model of sunspots

The interface between a sunspot’s central and outer regions shows a complex structure. Image credit: Matthias Rempel/NCAR In a breakthrough that will help scientists unlock mysteries of the Sun and its impacts on Earth, scientists have created the first-ever comprehensive computer model of sunspots. The resulting visuals capture both scientific detail and remarkable beauty. The …

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Saturn to pull celestial Houdini on 11 August

  Image from Stellarium Sky map program Click here to view the original Popular Mechanics article In 1918, magician extraordinaire Harry Houdini created a sensation when he made a 4 500 kg elephant disappear before a mystified audience of over 5 200 at New York’s famed Hippodrome theatre. But a vanishing pachyderm is nothing compared …

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