Lyman-alpha Nebula (IMAGE)

University of California - Santa Cruz

Lyman-alpha Nebula

Caption

MAMMOTH-1 is an extended blob of gas in the intergalactic medium called an enormous Lyman-alpha nebula (ELAN). The color map and contours denote the surface brightness of the nebula, and the red arrows show its estimated spatial extent.

Credit

Cai et al., Astrophysical Journal (Figure 2)

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