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staedtler staedtler
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7 years ago
What mechanism appears to produce the double radio sources seen in intergalactic space?
A)   Two oppositely directed jets of matter, ejected from a small source
B)   Two radio galaxies orbiting each other, much like two binary stars
C)   A radio-bright galaxy with a dark absorbing disk edge-on to the Earth, splitting the source into two from our viewpoint
D)   Two black holes orbiting around a small but massive galactic nucleus
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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7 years ago
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staedtler Author
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