Regions of hydrogen ions known as HII [H two] may be found in the emission type of this object.
Regions of hydrogen ions known as HII [H two] may be found in the emission type of this object. A red giant's outer layers can be ionized by the star's core to form its planetary type, and these may also form from the remnant ionized gases of a (*) supernova, such as the 1054 supernova that created one of these nicknamed Crab. The Pillars of Creation and the Horsehead are examples of, for 10 points, what interstellar clouds of dust and gas?
Regions of hydrogen ions known as HII [H two] may be found in the emission type of this object.
Nebula