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Astronomy  
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High school  
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This Hubble Space Telescope image captures the chaotic activity on a three-light-year-tall pillar of gas and dust reminiscent of a craggy fantasy mountaintop surrounded by wispy clouds. New stars buried inside the pillar cannot be seen in this image... (View More)

This Hubble Space Telescope image reveals a small region inside the massive globular cluster Omega Centauri, which boasts nearly 10 million stars. This colorful assortment of 100,000 stars residing in the crowded core of the cluster is one of the... (View More)

In this lesson, students read the original paper written by Henrietta Leavitt in which she compared the apparent brightness and period of Cepheid variable stars. The students prepare graphs from numerical data, just as she did, and compare their... (View More)

In this lesson, students create a fictional narrative on the beginning of time. They use their scientific knowledge of the Big Bang Theory and go back into time to when it occurred so they can make observations about it. Students can select from... (View More)

In this lesson, students create a timeline of world events from 1905 until 2006. Students locate key dates from the Cosmic Times poster series and determine world events that fit into the three story strands of Cosmic Times, as well as, the... (View More)

In this lesson, students explore the cosmic microwave background to understand why it permeates the universe and why it peaks as microwave radiation. Students should be able to explain that the origin of the background radiation is the uniform... (View More)

This series of curriculum support materials explores how our understanding of the nature of the universe has changed during the past 100 years. Students examine the process of science through the stories of the people and the discoveries that caused... (View More)

Keywords: History of science
Audience: Middle school, High school
Materials Cost: Free

In this lesson, students measure the size of several galaxies to reproduce a plot of Hubble's Law. The goal of this lesson is to give students the chance to simulate the process that led to the notion that the universe is expanding, provide insight... (View More)

Keywords: Data graphing

This lesson uses a simple discrepant event to demonstrate the underlying cause for early miscalculation of the size of the Milky Way galaxy. By standardizing the Cepheid period-luminosity relationship without recognizing there were two types of... (View More)

Audience: High school
Materials Cost: $1 - $5 per group of students

In this investigation, students use "point-source" light, light meters, and graphing software to quantify the reduction in light over distance. Through careful measurement of light received at several distances, students discover the best fit of the... (View More)

Audience: High school
Materials Cost: Over $20 per group of students