Carl Sagan - The near side of a galaxy is tens of thousands...

The near side of a galaxy is tens of thousands of light-years closer to us than the far side; thus we see the front as it was tens of thousands of years before the back. But typical events in galactic dynamics occupy tens of millions of years, so the error in thinking of an image of a galaxy as frozen in one moment of time is small.

Carl Sagan

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Carl Sagan Quotes

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The near side of a galaxy is tens of thousands of light-years closer to us than the far side; thus we see the front as it was tens of thousands of years before the back. But typical events in galactic dynamics occupy tens of millions of years, so the error in thinking of an image of a galaxy as frozen in one moment of time is small. Carl Sagan

They Said So®

Keywords

side galaxy tens thousands light-years closer front years back typical events galactic dynamics occupy millions error thinking image frozen moment time small

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