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NASA scientist, Neil Gehrels, serves as your guide to this online lesson on gamma ray tools, which focuses on advances in detector technologies since the 1980s that have enabled us to capture and image high-energy phenomena. Dr. Gehrels explains... (View More) different methods for detecting and imaging high-energy particles, how they work, and the advantages and disadvantages of each, using examples and imagery from NASA missions. (View Less)
In this online interactive, learners will explore how scientists learn about the composition of an asteroid by studying energy and neutrons that emanate from it. Includes audio (and transcription) explaining the diagram.
This interactive, online activity traces the history of the telescope from Galileo's first look at the stars to the work of modern observatories. Learners will read about the milestones in telescope development, witness the interplay between... (View More) technological and scientific advances, glimpse the humanity of the inventors and astronomers behind the telescopes, find out what the telescopes discovered, as well as learn the science of light and optics. Students can work through the activity independently or in groups. Teachers may also choose to have students study a portion of the activity and then share their learning with the class. The science of light and telescopes is presented in the section called "Get to the root of it" that can be used for review, learning the basics, or remediation. Detailed teacher pages, identified as Teaching Tips on the title page of the activity, provide science background information, lesson plan ideas, related resources, and alignment with national education standards. (View Less)
This interactive, online module allows learners to study the history of the discovery of black holes. Learners may work independently or in small groups to complete the activity. By completing this activity students learn the history of the... (View More) discovery of black holes. This activity is a subsection of the "Is a Black Hole Really A Hole?" within the online exploration "No Escape: The Truth about Black Holes." Detailed teacher pages, identified as Teaching Tips on the title page of the activity, provide science background information, lesson plan ideas, related resources, and alignment with national education standards. (View Less)