Teach-Astronomy-Radio-Galaxies

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http://www.teachastronomy.com/ About one percent of all galaxies and ten percent of all active galaxies have high levels of radio emission. Stars like the Sun and all other normal stars have very low levels of radio emission. So the sum of stellar populations can not produce such radio emission... More

2010-07-23

Added Jul 23, 2010  

Channel Education

Duration 1:06   |   views 701


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