Flexible Image Transport System file
The FITS file extension is primarily associated with Flexible Image Transport System (FITS) graphic files. The FITS data format is most commonly used in the field of astronomy, where it is used in the transporting, analysis and archiving of scientific data files.
An FITS file stores scientific data sets, which consist of multi-dimensional arrays and two-dimensional tables organized into rows and columns of information. FITS files sometimes have the FIZ file extension.
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