I saw Halley’s Comet at a local observatory. Quite a letdown. You could duplicate the experience by sitting in a large dark room looking through a Coke bottle at a nitelite at the opposite end of the room.
Agreement, regarding Halley's Comet. That one was taught for years, in school, that it (the comet) would be spectacular. What a disappointment. Was told over and over it will be visible with the naked eye. Then it was not. Disappointment out the wazzooo!