Discover interesting information about the planet Pluto through a vast archive of photographs and scientific facts.

Read about the atmosphere of Pluto.

In this simple lesson, students grow yeast to learn how the climates on each of the nine planets would affect life.

Learn fun facts and details about the atmosphere, geography, composition, and discovery of Pluto, a dwarf planet.

Find out about Clyde Tombaugh, the scientist who discovered the dwarf planet Pluto in 1930, and also discovered a number of asteroids.

Until the discovery of Eris, Pluto was known as the largest Keiper belt object. This dwarf planet has replaced Pluto in size and is accompanied by a satellite that has been given the name Dysnomia. Learn about this distant world here...

The innovative resource examines images of the Sun, Moon, Pluto, and all eight planets in the Solar System. Learners calculate the diameter of each object and rank the objects in order of size. The activity has an interactive online...

This is a biography page for the American astronomer and discoverer of Pluto, Clyde Tombaugh.

Read about our solar system and its formation over 4.6 billion years ago. Find out about the planets, asteroids, meteors, satellites, and comets. More in-depth planet background can be accessed through links.

Read about some of the most important space discoveries in recent times.