Skip to content
Curated category

Astronomical objects discovered in 1684

  • 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…