Earlier in November, Dr. Frank Summers of the Space Telescope Science Institute gave a public lecture on comets. Along with comets' origins, characteristics, orbits and types, Dr. Summers also gave an overview of Comet ISON and what we might expect as perihelion approaches. Below is the video of the lecture and as always, we have also provided annotations to various sections if you don't have time to watch the entire talk.
BEGINNING: History of Comets
What Are Great Comets? Here is a list of Great Comets throughout history along with some of their characteristics.
What is the Greatest Comet?
The Heart of a Comet. What does a comet nucleus look like? What's it made of? How big is it and what's the difference between an asteroid and a comet?
A Smash Hit. Discussion of the Deep Impact mission to Tempel 1 and what it taught us about comets.
Dust in the Solar Wind. Comet jets and gases become the coma. How big are comet tails? What makes the tail?
Interplanetary Interlopers. Discussion of orbits of comets, asteroids and Earth-crossing asteroids.
The Ends of the Solar System. Discussion ...