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Loading contentA Python library for computing precise positions of stars, planets, and satellites as seen from any point on the Earth or in space, using the same JPL ephemerides and reference frames as professional astronomy. Skyfield is a popular modern tool for accurate, easy positional astronomy.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.