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China launches rival GPS satellite system

China has launched commercial and public services across the Asia-Pacific region on its domestic satellite navigation network built to rival the US global positioning system.

Posted: Dec 28th, 2012

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New free e-books available about two famous NASA space telescopes

NASA's Hubble Space Telescope has been providing astounding images of the universe since April 1990 and has led to remarkable discoveries. NASA's James Webb Space Telescope is the next-generation telescope that will peer even deeper into space and unveil even more mysteries. Both of these extraordinary telescopes are now the topics of two free e-books available from the Apple iBookstore.

Posted: Dec 22nd, 2012

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Stars reveal the secrets of looking young

In certain circumstances, stars can be given a new burst of life, receiving extra fuel that bulks them up and substantially brightens them. This can happen if one star pulls matter off a neighbour, or if they collide.

Posted: Dec 19th, 2012

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Closest Sun-like star may have planets

An international team of scientists, including Carnegie's Paul Butler, has discovered that Tau Ceti, one of the closest and most Sun-like stars, may have five planets.

Posted: Dec 19th, 2012

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A swoosh in space: Merry Christmas from Hubble

The NASA/ESA Hubble Space Telescope celebrates the holiday season with a striking image of the planetary nebula NGC 5189. The intricate structure of the stellar eruption looks like a giant and brightly coloured ribbon in space.

Posted: Dec 18th, 2012

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How white dwarfs mimic black holes

New research has revealed that bright X-ray flares in nearby galaxies, once assumed to indicate the presence of black holes, can in fact be produced by white dwarfs.

Posted: Dec 17th, 2012

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Hot iron in the cosmos

A precision experiment has provided details of the X-ray emissions from highly ionised iron, advancing our understanding of black holes and supernovae.

Posted: Dec 16th, 2012

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