Source: wikibot/lyman-alpha-blobs
= Lyman-alpha blobs
{wiki=Category:Lyman-alpha_blobs}
Lyman-alpha blobs (LABs) are large, luminous regions of hydrogen gas that emit Lyman-alpha radiation, which is a specific wavelength of ultraviolet light produced when electrons in hydrogen atoms transition between energy levels. These blobs are typically found in the early universe and are often associated with star formation and active galactic nuclei (AGNs).