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FITS observation of 3C273 taken 2007-02-09 01:42:59 in filter SDSS-I

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FITS observation of 3C273 taken 2007-02-08 01:46:57 in filter SDSS-I

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FITS observation of 3C273 taken 2007-02-08 01:46:30 in filter SDSS-I

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FITS observation of 3C273 taken 2007-02-08 01:46:04 in filter SDSS-I

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FITS observation of 3C273 taken 2007-01-24 02:39:51 in filter SDSS-I

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FITS observation of 3C273 taken 2007-01-24 02:39:24 in filter SDSS-I

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FITS observation of 3C273 taken 2007-01-24 02:38:57 in filter SDSS-I

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Quasar Optical Variability

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Seasons: Exploring misconceptions

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Spinning Earth animations

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