Below you can find the In 1675 giovanni cassini noticed that this planet's ring was actually 2 rings Jeopardy Words Answer. The answer to In 1675 giovanni cassini noticed that this planet's ring was actually 2 rings has 6 letters. This clue belongs to the Scientists & inventors category and is part of Jeopardy Word Level 1872. If you scroll near the bottom you will find other clues and answers part of level 1872