enormous Lyman-alpha nebula

== English == === Etymology === From enormous +‎ Lyman alpha +‎ nebula. From being a nebula with Lyman-alpha emissions that is larger than galaxies. === Noun === enormous Lyman-alpha nebula (plural enormous Lyman-alpha nebulas) (astronomy) A large gas cloud (nebula) larger than galaxies, found in intergalactic space, which radiates with an emission spectrum containing 2.47 THz lines (Lyman-alpha lines). ==== Synonyms ==== (abbreviation) ELAN ELαN ELyαN ==== Hypernyms ==== luminous nebula emission nebula nebula intergalactic cloud gas cloud ==== Derived terms ==== (abbreviation) ELAN ELαN ELyαN ==== Related terms ==== Lyman-alpha blob / LAB / LαB / LyαB Lyman-alpha line / Ly-α line Lyman-alpha / Ly-α Lyman series / Ly-series / Ly series