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Vesta in Dawn's rear view mirror

(—NASA's Dawn mission is releasing two parting views of the giant asteroid Vesta, using images that were among the last taken by the spacecraft as it departed its companion for the last year.

dateSep 11, 2012 in Space Exploration
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Paleomagnetists put controversy to rest

( -- Princeton University scientists have shown that, in ancient times, the Earth's magnetic field was structured like the two-pole model of today, suggesting that the methods geoscientists use to reconstruct ...

dateOct 02, 2009 in Earth Sciences
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Explained: Matrices

Among the most common tools in electrical engineering and computer science are rectangular grids of numbers known as matrices. The numbers in a matrix can represent data, and they can also represent mathematical equations. ...

dateDec 06, 2013 in Computer Sciences
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How much do binary stars shape planetary nebulae?

Planetary nebulae come in a dazzling array of shapes, from spherical shells of gas, to blobby structures barely containing symmetry at all. Controversy has surrounded the cause for this diversity. Could it be magnetic fields, ...

dateJun 16, 2011 in Astronomy
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