In a first, astronomers spotted a space rock turning into a comet
Did you know that short-period comets are mainly confined to the plane of the Solar System, while long-period comets come from every direction in space?
The Long and Short of Comet Periods! - YouTube
Comets explained for everyone. Facts, Types, and Parts. - Little Astronomy
Short-Lived Comets | Answers in Genesis
Comets and Asteroids
Why Do Comets Come Back, Instead of Veering Off Into Space?
A guide to periodic comets - BBC Sky at Night Magazine
What is A Short Period Comet – Less than 200 Year Orbital Cycle
Long Period Comets - an overview | ScienceDirect Topics
What Is a Comet? | NASA Space Place – NASA Science for Kids
Albert van der Sel: Some facinating aspects of our Solar System.
Orbits of representative short-period comets relative to the outer... | Download Scientific Diagram
Halley's Comet or Comet Halley is the best-known of the short-period comets, and is visible (with the naked eye) from Earth every 75 to 76 years | Anne's Astronomy News
Information about Comets!
Long-period Comets | COSMOS
Comets: What Are They?
Big, Dangerous Comets Are More Common Than Scientists Thought | Space
Age Indicating Factors: Short Period Comets | Across the Fruited Plain
Age Indicating Factors: Short Period Comets | Across the Fruited Plain
Halley-Type Comets | COSMOS
RARE 4000-YEAR COMETS CAN CAUSE METEOR SHOWERS ON EARTH
