Figure 15-33: RIVUXG The Antitail of Comet Hale-Bopp In January 1998, nine months after passing perihelion, Comet Hale-Bopp was oriented in such a way that the end of its arched dust tail looked like a spike sticking out of the comet’s head. This spike is called an “antitail” because it appears to protrude in front of the comet.