Users can read and view imagery that explains objects in our universe that produce a vast range of radiation with wavelengths either too short or too long for our eyes to see. Materials presented here show that the type of radiation emitted by an object is determind by its temperature. A table showing the types of radiation, temperatures, and types of celestial objects that emit them is included. ... Full description.

This simulator allows the user to manipulate seasons on Earth or the other planets. The target planet, viewpoint, date and time, field of view, and other options may be chosen. Full description.

As part of this activity, students will construct a sundial from paper. Instructions on how to make the sundial itself, orient it correctly, and how to compensate for latitude and irregularities in Earth's orbit are provided. Full description.

This timeline chronicles events related to magnetospheric exploration, and places them in the broader context of the history of science and technology. It begins in 1000 A.D. with the discovery of the magnetic compass. Full description.

The materials presented here use space and spaceflight to introduce students to two areas of the core science curriculum: the motion of the Earth in space, and Newtonian mechanics. Teachers may use these lesson plans and problem sets as a guide to a sequential course, or as a source for student projects. Topics which are covered include astronomy, mechanics, solar physics, and spaceflight. A mathematics ... Full description.

As part of this lesson plan, students will learn about how energy is produced and dissipated by stars, including our own Sun. In addition, materials presented here explain the formation, evolution,and eventual "death" of stars in supernova explosions, and some fundamentals of nuclear physics. Definitions of terms and questions for the class are included. Full description.

This glossary provides an alphabetical listing of terms related to physical features, types of activity, and energy radiated by the sun. Links embedded in the text help connect related terms. Full description.

As part of this activity, students assemble a paper model of the sun and answer questions about solar radiation, surface features of the sun, and solar activity cycles. A template for printing and instructions for assembling the model are provided. Full description.

Visitors to this site can follow the life cycle of a star, beginning with its formation from matter exploded outward by the Big Bang, followed by its expansion into a red giant as nuclear "fuel" is consumed, and ending with its "death" in a supernova, after which it becomes a neutron star or black hole. Full description.

This resource offers four videos that explain Kepler's three laws of planetary motion. A brief introduction provides biographical information on Kepler. Links to a glossary are embedded in the text, and written descriptions of what is occurring in the videos are provided. Full description.