Britannica AI Icon

Tempel 1

comet
Also known as: Comet 9P/Tempel 1, Comet Tempel 1

Quick Summary

Comet Tempel 1 is a small celestial body composed of volatile ices that orbits the Sun. When it approaches the Sun, these ices sublimate, creating a visible atmosphere called a coma, along with dust particles. This process forms two tails: one of ionized molecules and another of dust.

In 2005, the U.S. space probe Deep Impact intentionally collided a projectile with Tempel 1's nucleus to study its composition and the resulting crater. This mission provided valuable data on the structure and makeup of comets, revealing that Tempel 1's nucleus was highly porous and less dense than water ice.1

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.