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The Einstein Cross Gravitational Lens
The Einstein Cross Gravitational Lens
APOD 2017-12-18
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Summary:
Most galaxies have a single nucleus -- does this galaxy have four?
Link:
https://apod.nasa.gov/apod/ap171217.html
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Gudgeon and gist
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APOD
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Most galaxies have a single nucleus -- does this galaxy have four? Most galaxies have a single nucleus -- does this galaxy have four?