Below you can find the In 1973 skylab astronauts had a chance to study this comet which appears every 75000 years Jeopardy Words Answer. The answer to In 1973 skylab astronauts had a chance to study this comet which appears every 75000 years has 8 letters. This clue belongs to the Comets & asteroids category and is part of Jeopardy Word Level 1630. If you scroll near the bottom you will find other clues and answers part of level 1630