Mapping the Halo (IMAGE)

University of Arizona

Mapping the Halo

Caption

The spectra used in this study cover large portions of the sky, depicted here as a map wrapping around the observer. The colors code for spectral emissions from diffuse hydrogen gas in the Milky Way's halo: While the degrees of brightness vary, they are remarkably uniform across the sky, indicating a rather uniform distribution of hydrogen as would be expected in a galactic halo.

Credit

H. Zhang and D. Zaritsky/Nature

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