This product uses a collection of Hubble Space Telescope (HST) images of galaxies in the Coma Cluster, and engages students in an inquiry-based learning activity studying the evolution of galaxies in dense clustered environments. Students learn the basics of galaxy classification by making use of the HST images to discover a "morphology-density effect," and will then make hypotheses about the cause ... Full description.

This poster outlines the major mission highlights of the Interstellar Boundary Explorer (IBEX) mission, a Small Explorer Earth-orbiting spacecraft that is designed to map the distant boundary between the solar wind from our Sun and the interstellar medium. This poster supports a full-length planetarium show about the IBEX mission and the boundary of the Solar System. Each short activity/product helps ... Full description.

This hands-on activity explores the nature of thermal inertia. 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 poster series highlights six astronomical images observed with NASA?s Great Observatories (Hubble, Chandra and Spitzer) and found within the "From Earth to the Universe" (FETTU) exhibition. Each poster contains additional information on the historical context of the astronomical objects (constellation, view with the unaided eye), as well as basic facts about the specific object, the category ... 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.

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 activity relates an elastic collision to the change in a satellite?s or spacecraft?s speed and direction resulting from a planetary fly-by, often called a ?gravity assist? maneuver. Both hands-on and online interactive methods are used to explore these topics. Full description.

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

This service answers users questions on a wide variety of topics in high-energy astronomy. Questions are answered by scientists within the Lab for High-Energy Astrophysics at NASA/GSFC. An archive of questions and answers are categorized by topic for users to browse. Suggestions for additional information resources are also provided. Full description.