Go study the universe. Pupils learn seven aspects about astronomy and astronomers. They begin to learn about constellations; distance and motion between objects; gravity; the electromagnetic spectrum; dark matter and energy; and teams of...

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...

In this celestial objects quiz worksheet, students complete an on-line quiz, clicking on questions and matching answers, scoring 1 point for each correct answer. A printed version is available.

In this preposition quiz worksheet, students select the preposition that correctly completes a sentence. Students may click on an "answer" button for immediate feedback. A reference web site is given for additional activities.

Play this creative puzzle game where the player views a solar system object that is all mixed-up. Try and find the matching parts of the photograph, and learn about the solar system in the process.