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Cheating to create the perfect simulation: Physicists on way to describing inside of neutron stars

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Jan. 17, 2013 — The planet Earth will die -- if not before, then when the Sun col­lapses. This is going to happen in approximately seven billion years. In the uni­verse however the death of suns and planets is an everyday occurance and our solar system partly consists of their remnants.

The end of stars -- suns -- rich in mass is often a neutron star. These "stars' liches" demonstrate a high density, in which atoms are extremely compressed. Such neutron stars are no bigger than a small town, but hea­vier than our sun, as physicist PD Dr. Axel Maas of the Jena University (Germany) points out. He adds: "The atomic nuclei are very densely packed." Compared to ato­ms, like water, the nuclei of neutron stars are as tightly...

New Chandra movie features neutron star action

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The Vela pulsar, a neutron star that was formed when a massive star collapsed. (Credit: X-ray: NASA/CXC/Univ of Toronto/M.Durant et al; Optical: DSS/Davide De Martin)

Jan. 7, 2013 — Unlike with some blockbuster films, the sequel to a movie from NASA's Chandra X-ray Observatory is better than the first. This latest movie features a deeper look at a fast moving jet of particles produced by a rapidly rotating neutron star, and may provide new insight into the nature of...

Astronomy: Stars reveal the secret of aging well

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This image from the NASA/ESA Hubble Space Telescope shows NGC 6388, a dynamically middle-aged globular cluster in the Milky Way. While the cluster formed in the distant past (like all globular clusters, it is over ten billion years old), a study of the distribution of bright blue stars within the cluster shows that it has aged at a moderate speed, and its heaviest stars are in the process of migrating to the centre. A new study using Hubble data has discovered that globular clusters...

Shot away from its companion, giant star makes waves: Spitzer captures infrared portrait

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The giant star Zeta Ophiuchi is having a "shocking" effect on the surrounding dust clouds in this infrared image from NASA's Spitzer Space Telescope. Stellar winds flowing out from this fast-moving star are making ripples in the dust as it approaches, creating a bow shock seen as glowing gossamer threads, which, for this star, are only seen in infrared light. (Credit: NASA/JPL-Caltech)

Dec. 18, 2012 — Like a ship plowing through still waters, the giant star Zeta...

'Glitch’ in pulsar ‘glitch’ theory

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Background: The Vela supernova remnant at optical wavelengths, with location of the Vela pulsar indicated. Inset: Artist's impression of the pulsar’s interior, and the interaction between superfluid vortices and the nuclei that make up the star’s crust. (Credit: CTIO/AURA/NSF)

Dec. 18, 2012 — Researchers from the University of Southampton have called in to question a 40 year-old theory explaining the periodic speeding up or 'glitching' of...