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Topics: Micro gravity experiments in space illustrate how characteristics of materials can change in the absence of gravity, for example a droplet of water. Introduces a stratolite, a communications satellite that would be positioned in the Earth's atmosphere, and how it can provide a communication network over a large geographic area. A supernova recently discovered, is explained with illustrations and beautiful photos. Touches on black holes and other astronomical concepts that are related to the force of gravity. Considers the light spectrum and how it can be used to gain information about characteristics or behaviors of celestial objects. Inventories the various types of rays and their uses, such as ultraviolent rays, x-rays, and gamma rays--and how these waves can be used as tools to better understand the universe. Spectrometers. Explores rockets used for experiments in space under conditions of near weightlessness. | |