The galaxy cluster 1E 0657-56 (known as the Bullet Cluster) lies 3.8 billion light-years away. It's one of hundreds that appear to be carried along by a mysterious cosmic flow. Credit: NASA/STScI/Magellan/U.Arizona/D.Clowe et al.
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The galaxy cluster 1E 0657-56 (known as the Bullet Cluster) lies 3.8 billion light-years away. It's one of hundreds that appear to be carried along by a mysterious cosmic flow. Credit: NASA/STScI/Magellan/U.Arizona/D.Clowe et al. |
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