Students will use the law of reflection to reflect a laser beam off multiple mirrors to hit a sticker in a shoebox. Since X-ray telescopes must use grazing angles to collect X-rays, students will design layouts with the largest possible angles of... (View More) reflection. This activity is from the NuSTAR Educators Guide: X-Rays on Earth and from Space, which focuses on the science and engineering design of NASA's NuSTAR mission. The guide includes a standards matrix, assessment rubrics, instructor background materials, and student handouts. (View Less)

This lesson provides a way for students to determine the relationship between the distance from a light source and its brightness. Once students discover the relationship, they can begin to understand how astronomers use this knowledge to determine... (View More) the distances to stars and far away galaxies. (View Less)

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) data is the inverse square rule. Using this rule, students then calculate the distance between the light source and the light meter at random placements. Finally, students extend this principle to model the manner in which distances to Cepheid variable stars are measured. The distance between the Cepheid (here the light source) and the Earth (the light meter) can be determined by comparing the output of the source to the amount of light received. An historic scientific breakthrough occurred when the period-luminosity relationship of Cepheids was quantified throughout the early 1900s. This breakthrough allowed astronomers to gain a more correct understanding of the dimensions of our galaxy and the universe beyond. This activity is part of the "Cosmic Times" teacher's guide and is intended to be used in conjunction with the 1929 Cosmic Times Poster. (View Less)

In this activity, identified as the capstone activity, students will be asked to examine and analyze spectra from a past mission and compare it to simulations of data from future missions, including Suzaku. A thorough comparison will show better... (View More) data from each successive generation of spacecraft. Students will compare and contrast their findings as a class. The guide includes discussion questions and instructions for using the video - Building the Coolest X-ray Satellite: Astro-E2 - in the classroom. The video describes NASA's development of the X-ray Telescopes and X-ray Spectrometer for the Astro-E2 (Suzaku) mission. This is the final activity in the educator guide. (View Less)

In this activity, students investigate one specific topic (MACHOs, WIMPs or hydrogen gas) related to dark matter using available resources. Students will organize their findings and present this information in a creative and engaging fashion. This... (View More) is activity seven in the "Hidden Lives of Galaxies" information and activity booklet that was designed for use with "The Hidden Lives of Galaxies" poster. The booklet includes student worksheets and background information for the teacher. (View Less)