In this activity, students examine their concepts of a comet by designing and building a model. The goal is to have students replicate the scientific processes of observing, modeling, forming an explanation, making new observations, and revising. In this manner, students have the opportunity to emulate the experience of scientific discovery that makes science so exciting. Younger students will learn ... Full description.

In this activity, students will observe the surface of rotating potatoes to help them understand how astronomers can sometimes determine the shape of asteroids from variations in reflective brightness. When astronomers graph data relating to reflective brightness as a function of time, the resulting graph is called a "light curve." Full description.

This product illustrates how scientists learn about the composition of an asteroid by studying energy and neutrons that emanate from it. The Dawn spacecraft contains three instruments -- the Gamma Ray and Neutro Detector (GRaND), the Visible Infrared Spectrometer, and the Framing Camera -- that will provide answers to questions about the formation and evolution of the early solar system. Full description.

This is version 3 of the space Weather Media Viewer, created to work with the space Weather Action Center to see near-real time data and to provide additional images and resources available for educational use. It features easy downloads that can also be added to news reports and space weather reports. It was designed for ease in adding any media (videos, images) data. Full description.

This lithograph shows the deepest visible light observation of the early universe. In contrast to the image?s harvest of classic spiral and elliptical galaxies, there are a number of oddball galaxies littering the field. Some look like toothpicks; others like links on a bracelet. A few appear to be interacting. The information contained in the text can be used to introduce the idea that galaxies evolve ... Full description.

This DVD provides an 18-minute introduction to how NASA is observing our ever-changing planet. On the The Dynamic Earth DVD Web page you can download the video as an iPod or iPhone version, as well as an AppleTV/Full resolution version, and access a glossary and links to related Web sites. Full description.

This Hubble Space Telescope image shows the diversity of galaxies in the universe. A huge elliptical galaxy, designated ESO 325-G004, dominates the image. In addition to many elliptical and spiral galaxies, the image contains a few small irregular galaxies, and red, yellow, and blue foreground stars. The accompanying classroom activity is a current support tool designed for use as an introductory ... Full description.

These videos introduce middle- and high school-age learners to the electromagnetic spectrum. The product consists of 8 animations including an introduction to electromagnetic waves and one animation for each wavelength of the EM spectrum (Radio, Microwave, Infrared, Visible, Ultraviolet, X-Rays and Gamma Rays). Each wavelength of the EM spectrum offers a construct to illustrate and teach about NASA ... Full description.

This is an image of Mars taken by the Hubble Space Telescope. You will also find information about the climate and weather conditions on Mars. 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.