Part 1 of the X-ray Spectroscopy Unit from NASAs Imagine the Universe! lesson plans includes a series of three lessons on the formation of elements in stars. During this three lesson series, students learn about the life cycle of stars and model the formation of elements in stars. The lessons are a demonstration of type so fusion reactions and modeling not just the changes to matter during the processes but also the energy involved in these reactions.
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This collection of visualizations was made from Landsat imagery. Many of these visualizations are designed to show changes in our environment through time. Subjects include glacial retreat, urban growth, landforms and coastlines, floods, fires, deforestation, volcanism, and others.
This webpage is part of NASA's Visible Earth, a searchable directory of images, visualizations, and animations of Earth. It features remotely sensed imagery of volcanic eruptions that display smoke plumes, lava flows, fires, and other eruptive features. Each image is accompanied by a caption describing the subject being illustrated and the satellite or instrument which captured the image. Files are in either TIFF, GIF, or JPEG formats.