Content deleted Content added
Line 2:
These [[emission line]]s were first discovered in the spectrums of planetary nebulae in the 1860s. At that time, they were thought to be due to a new element which was named ''[[nebulium]]''. In 1927, [[Ira Sprague Bowen]] came up with the current explanation of them being due to doubly ionized oxygen.<ref>{{cite journal | doi = 10.1038/120473a0 | title = The Origin of the Nebulium Spectrum | year = 1927 | author = Bowen, I. S. | journal = Nature | volume = 120 | issue = 3022 | pages = 473|bibcode = 1927Natur.120..473B }}</ref>
In the Gas Pillars of the Eagle Nebula. Doubly-ionized oxygen atoms emit blue light.▼
== References ==
Line 12 ⟶ 16:
▲In the Gas Pillars of the Eagle Nebula. Doubly-ionized oxygen atoms emit blue light.
{{science-stub}}
| |||