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RE: Spiral galaxies & Density Wave Theory

in #science • 6 years ago

I spend a few moments after reading this post to simplify it, but all the ideas and hypothesis of the galaxy haven't sunk in my mind @@. I need more time for this hahhaha :D

6 years ago in #science by
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     6 years ago 

    nó khá là khó hiểu và khô khan

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