• Thousands of galaxies shine bright against the dark background of the cosmos. At the center of the image are two large clouds of interstellar gas (colored pink). They are surrounded by two large clouds of bluish haze.
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    A composite image shows the Bullet Cluster, formed after the collision of two large clusters of galaxies. Hot gas detected by Chandra is seen as two pink clumps and contains most of the conventional matter. The blue clumps represent large masses of dark matter.

  • Thousands of galaxies shine bright against the dark background of the cosmos. At the center of the image are two large clouds of interstellar gas (colored pink). They are surrounded by two large clouds of bluish haze.

Created:

August 21, 2006

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NASA

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