This image shows the colliding galaxy clusters that make up the system PSZ2 G181 in blue, flanked by a pair of radio shock fronts in red © X-ray: NASA/CXC/CfA/Stroe ...
Picture of the month: The European Space Agency has shared a dazzling image of Westerlund 1, a super star cluster situated around 12,000 light-years from Earth in the constellation Ara. It was first ...
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