In this interactive web game, participants learn about the different types of galaxies (spiral, elliptical and irregular) by viewing them in different wavelength bands (infrared, visible, x-ray). They then learn about active galaxies vs. quiescent galaxies by examining visible light spectra together with the multi-wavelength images. The final challenge is to observe a model of our own galaxy to determine ... Full description.

This hands-on activity explores the nature of thermal inertia. Full description.

This activity is designed to introduce the engineering aspects of precision pointing of spacecraft. Full description.

This booklet introduces electromagnetic waves, their behaviors, and how scientists visualize these data. Each region of the spectrum is described and illustrated with examples of NASA science. It is a companion piece to the video series under the same title. Full description.

The Wilkinson Microwave Anisotrophy Probe (WMAP) hosts a website presenting basic information and concepts about Cosmology and our current best understanding of the Universe. Full description.

This hands-on activity explores spacecraft radio communication concepts, including the speed of light and the time-delay for signals sent to and from spacecraft. Full description.

This site describes snow crystals and snowflakes. Although a common meteorological phenomenon, snow crystal growth is a fascinating and poorly understood process, in which remarkably complex and beautifully symmetric structures appear, quite literally, out of thin air. The many facets of snow crystals are described here, along with the attempts to understand their formation. Site highlights include ... Full description.

This resource covers basic astronomy, Newtonian mechanics, the Sun and related topics (weather, electromagnetic waves, nuclear energy), and space flight. The material stresses space applications, history, and intuitive content, and includes a brief refresher course on algebra and trigonometry. It is also available in Spanish. Full description.

This site provides a non-mathematical introduction to the magnetism of the Earth, the Sun, the planets and their environments, following an historical thread. It is also available in French, Spanish, and German. Full description.

This non-mathematical, self-contained exposition of studies of the Earth's magnetic environment in space covers such topics as magnetism, electrons, eons and plasmas, the radiation belt, the sun and the solar wind, exploring earthspace, the dynamic magnetosphere, auroras, and interplanetary field lines. Many of the topics introduce the user to the related physics and astronomy, and are thus a useful ... Full description.