Thousands of distant stars crowd the view against black space. Tendrils of red nebulosity bloom across the image.

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Clusters of stars set the interstellar medium ablaze in the Andromeda Galaxy about 2.5 million light-years away.

Credits: NASA, ESA, M. Boyer (Space Telescope Science Institute), and J. Dalcanton (University of Washington); Image Processing: Gladys Kober (NASA/Catholic University of America)