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Discoveries by Giovanni Domenico Cassini

  • Dione (moon)Giovanni Domenico Cassini set up a large aerial telescope on the grounds of the Paris Observatory in 1684. He found Dione that year while searching for moons…
  • Tethys (moon)Giovanni Domenico Cassini stood before a large aerial telescope on the grounds of the Paris Observatory in 1684. He peered into the darkness and found four…
  • Rhea (moon)Giovanni Domenico Cassini pointed a telescope toward Saturn on the 23rd of December 1672. He used an instrument crafted by Giuseppe Campani to spot a faint…
  • Iapetus (moon)Giovanni Domenico Cassini spotted Iapetus in October 1671. This Italian-born French astronomer found the moon on the western side of Saturn.