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This website is a collection of questions relevant to the science and mission of the Chandra X-Ray Observatory, submitted by students and the general public, with answers posted by experts in the field. Questions are organized in categories such as... (View More)

Audience: Informal education
Materials Cost: Free

This 28-page coloring and activity book includes general information on X-ray astronomy, Chandra and the STS-93 mission. It also looks at black holes, supernovas, galaxy clusters and more. Each image is accompanied by a summary of information.... (View More)

Audience: Informal education
Materials Cost: Free

Students begin this lesson by creating a galaxy classification system for a collection of Hubble Space Telescope images. Following an explanation of galaxy morphological types, students then use additional images to identify and count the galaxy... (View More)

This is a lesson about size and scale, also called the Solar Pizza. Learners, or the facilitator, will cut out scaled images of the Sun and Earth and walk them approximately sixty-five feet apart to simultaneously show the size scale and distance... (View More)

Audience: Informal education
Materials Cost: Free

In this activity, students will use a simulator of an orbiting X-ray observatory to observe a supernova remnant, the expanding gas from an exploded star. They will take X-ray spectral data, analyze them, and answer questions based on that data. This... (View More)

The lithograph contains a Hubble Space Telescope image that shows the colorful Planetary Nebula NGC 2440 with one of the hottest known white dwarf stars at its center. The text briefly explains the process of stellar death of sun-like stars and... (View More)

Audience: High school, Informal education
Materials Cost: Free

The lithograph contains a Hubble Space Telescope image that shows M82, an edge-on galaxy, undergoing a frenzy of star formation. The text explains the possible causes of the galaxy's unusual appearance and star-birth activity. In the accompanying... (View More)

Audience: High school, Informal education
Materials Cost: Free

This lesson plan will provide a concrete way for students to understand the concept of distance in space equals distance in time. This is done using information gathered from a timeline activity in Lesson 1: Earth, the Universe, and Culture.... (View More)

Audience: Middle school
Materials Cost: Free

This is an activity about the Hubble Deep Field image, an observation of one small area of sky that contained no previously-detected objects. The long time exposure of this image allows us to detect some of the most distant objects seen in our... (View More)

Audience: Elementary school, Middle school, High school
Materials Cost: Free

This manual provides an overview of how telescopes have changed our understanding of the universe and contains simple demonstrations to use at star parties to get across basic ideas of optics. This manual will also help explain why the images that... (View More)

Audience: Informal education
Materials Cost: Free