1997 Event Comet Hale-Bopp Perihelion (0.914 AU) 1997 Event 39 cult memebers in California commit mass suicide (Hale-Bopp) 1997 Event Comet Hale-Bopp Closest Approach to Earth (1.315 AU) 1997 Event Comet Hale-Bopp directly above the Sun (1.04 AU) 1997 Event Comet Hale-Bopp crosses Mars' orbit
