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November 25, 2013
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Size comparison: Neutron star is superimposed on satellite image of area around Hannover, Germany.
A neutron star is the densest object astronomers can observe directly, crushing half a million times Earth's mass into a sphere about 20 kilometers across. This illustration compares the size of a neutron star to a satellite image of the area around Hannover, Germany, hometown of the Albert Einstein Institute Hannover.
Credit: NASA's Goddard Space Flight Center
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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