Researchers think they have evidence of a new planet deep in our solar system that is the size of Neptune and orbits the sun far beyond Pluto. The orbit simulator shows the orbits of our well-known planets, as well as Pluto and the comet...

Get to know our little part of the vast universe. Learners read about the common and not-so-common facts about each of the planets in the solar system. The interactive lesson includes a large amount of information as well as a quiz to...

Why does it take Pluto 90,000 days to orbit the sun, but it only takes Mercury 88 days? An interactive lesson helps pupils find a connection between the speed of orbit and distance a planet is from the sun. The simulation allows for...

In this astronomy worksheet, students complete a five question multiple choice on-line interactive quiz about astronomy. Prior knowledge is assumed.

A virtual journey through space offers photos and facts about Earth and its neighboring planets, comets, other celestial bodies of the Solar System, and the Milky Way and Andromeda galaxies.

Imagine a time when you can travel through space, planet to planet, cheaply and in comfort, when you can take a trip to the stars as your next holiday. Well, imagine no more. Learn more about the solar system as you take this trip of a...

Solar system surface map database. Includes maps of all solid planets and many moons. Maps of gas planets are either based on images taken by Voyager, or are fictitious maps including general storm systems.