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staedtler staedtler
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7 years ago
The typical time-scale for variability of a blasar (a parameter related to true physical size of these objects) is
   A)  about 1 week.    B)  less than 1 day.    C)  a few seconds.    D)  about 1 year.
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Discovering the Universe

Discovering the Universe


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papachulopapachulo
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7 years ago
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staedtler Author
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7 years ago
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Correct Slight Smile
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