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  1. THE ORBIT OF A COMET - University of St Andrews

  2. Why do comets have such eccentric orbits? | Astronomy.com

  3. elliptical orbit - Encyclopedia Britannica

  4. Comets: Everything you need to know | Space

  5. Why Comets Are Important - NASA Solar System Exploration

  6. What Is a Comet? | NASA Space Place – NASA Science for Kids

  7. The Comet's Tale: Orbits - University of California, Berkeley

  8. The Path of a Comet - How Comets Work - HowStuffWorks

  9. Comet Orbits | Solar System | Space FM

  10. Comet: Definition, Tails, Facts, Orbit, Visibility, Difference