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International team observe 'hungry twin' stars gobbling their first meals

Years of monitoring its infrared with the Spitzer instrument reveal that it becomes 10 times brighter every 25.34 days, Gutermuth and colleagues say. This periodicity suggests that a companion to the central forming star is likely inhibiting the infall of gas and dust until its closest orbital approach, when matter eventually comes crashing down onto the protostellar "twins".

Posted: Jan 31st, 2013

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Herschel finds star possibly making planets past its prime

A star thought to have passed the age at which it can form planets may in fact be creating new worlds. The disk of material surrounding the surprising star called TW Hydrae may be massive enough to make even more planets than we have in our own solar system.

Posted: Jan 30th, 2013

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The tail of Venus

When the solar wind nearly breaks off, our neighbour's ionosphere expands into space.

Posted: Jan 29th, 2013

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Chameleon star baffles astronomers

Pulsars - tiny spinning stars, heavier than the sun and smaller than a city - have puzzled scientists since they were discovered in 1967. Now, new observations by an international team make these bizarre stars even more puzzling.

Posted: Jan 25th, 2013

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