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Astronomy

Emission Nebulae (H II)

An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. The most common source of ionization is high-energy [...] emitted from a nearby hot star. Among the several different types of emission nebulae are H II regions, in which star formation is taking place and young, massive stars are the source of the ionizing photons. [1]


  1. Emission nebula - Wikipedia 22/10/06[]

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