Comet videos (i.e., Comet videos):

1. Halley's Comet Orbital Path | 0:26: Halley's comet does indeed have a clockwise and very elliptical orbit as viewed from above the NCP side of ecliptic plane. Because of clockwise direction, the orbit is a retrograde orbit (i.e., a retrograde orbit in 3-dimensional space). Halley's comet may, of course, have apparent retrograde motion too sometimes. The music is Beethoven's Pathetique Piano Sonata No. 8, Opus 13 in C minor, Part II, Adagio cantabile. Short enough for classroom.
2. Hale Bopp Timlapse | 0:33: Comet Hale-Bopp was a bright comet of 1996--1997. The films, maybe from 2 different nights, are time-lapsed Comets of very high apparent brightness are called great comets. In 1996, we had 2 great comets, Comet Hyakutake and Comet Hale-Bopp, and none since really. Short enough for classroom
3. Orbits and closeups of Hale Bopp, Halley and some other comets | 2:41: Probably all pretty accurate. There's piano music by Frederic Chopin (1810--1849). Too long for the classroom, but one can scroll through a few seconds here and there.
4. Comet Shoemaker Levy colliding with Jupiter | 0:35 From the European Space Agency's film 15 Years of Discovery. It's an animation of course. Note the Comet Shoemaker-Levy 9 impactors hit the nightside of Jupiter ♃ starting 1994 Jul16 (see Wikipedia: Comet Shoemaker-Levy 9: Impacts). Short enough for the classroom.
5. Visualization of Comet Shoemaker-Levy 9 Impacting Jupiter: From the National Geographic | 2:30: Some artistic license was used since the Comet Shoemaker-Levy 9 impactors hit the nightside of Jupiter ♃ starting 1994 Jul16 (see Wikipedia: Comet Shoemaker-Levy 9: Impacts). Too long for the classroom.
6. Deep Impact (8/10) Movie CLIP - The Comet Hits Earth (1998) HD | 2:29: Not for the faint of heart. NOT suitable for the classroom.

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