Image
© UIUC/Y. Chu et al./NASA/HSTCat's Eye nebula
To celebrate the 10th anniversary of the orbital Chandra X-ray Observatory, NASA has released this composite image of the Cat's Eye nebula. It is made with images from Chandra and the Hubble Space Telescope, two of NASA's four Great Observatories.

Since it took its first image on 19 August 1999, Chandra has captured unprecedented X-ray pictures of exotic environments, helping astrophysicists understand the evolution of the cosmos.

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