Editing Astronomical radio source (section)

==History==
In 1932, American [[physicist]] and [[radio]] [[engineer]] [[Karl Jansky]] detected [[radio waves]] coming from an unknown source in the center of the Milky Way [[galaxy]]. Jansky was studying the origins of radio frequency interference for [[Bell Laboratories]].  He found "...a steady hiss type static of unknown origin", which eventually he concluded had an extraterrestrial origin. This was the first time that radio waves were detected from outer space.<ref>{{cite book|last=Koupelis|first=Theo|author2=Karl F. Kuhn|title=In Quest of the Universe|publisher=[[Jones & Bartlett Publishers]]|year=2007|edition=5th|isbn=978-0-7637-4387-1|url=https://books.google.com/books?id=WwKjznJ9Kq0C|access-date=2008-04-02|page=149}}</ref> The first radio sky survey was conducted by [[Grote Reber]] and was completed in 1941. In the 1970s, some stars in the Milky Way were found to be radio emitters, one of the strongest being the unique [[Binary star|binary]] [[MWC 349]].<ref>{{cite journal | last=Braes | first=L.L.E. | year=1974 | title=Radio Continuum Observations of Stellar Sources | journal=IAU Symposium No.60, Maroochydore, Australia, September 3–7, 1973 | pages=377–381 | bibcode=1974IAUS...60..377B | volume=60 | doi=10.1017/s007418090002670x| doi-access=free }}</ref>