Here's a breakdown:
* Small Comets: These can leave craters ranging from a few meters to a few hundred meters in diameter.
* Large Comets: These can leave craters several kilometers in diameter.
Examples:
* Shoemaker-Levy 9: This comet broke apart into 21 fragments that crashed into Jupiter in 1994. The largest impact created a crater approximately 12,000 kilometers (7,500 miles) wide.
* The Chicxulub Crater: Though likely caused by an asteroid, this 180 km (112 miles) wide crater in Mexico is evidence of a massive impact that could have been caused by a very large comet.
Important Note: The size and speed of the comet are not the only factors determining crater size. The angle of impact, the composition of the target body, and the presence of an atmosphere all play a role.
