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Leibacher, John W.; And Others – Scientific American, 1985
Helioseismology (similar to geophysicists' study of seismic waves) makes it possible to penetrate the sun's opaque brilliance by measuring surface oscillations. Their pattern and period hold clues to temperature, structure, composition, and dynamics of the sun's interior. Scientists have used data to build models (evolved mathematically) to…
Descriptors: Astronomy, College Science, Higher Education, Physics
Gulkis, Samuel; And Others – Scientific American, 1990
Outlines the Cosmic Background Explorer (COBE) mission to measure celestial radiation. Describes the instruments used and experiments involving differential microwave radiometers, and a far infrared absolute spectrophotometer. (YP)
Descriptors: Aerospace Technology, Radiation, Satellites (Aerospace), Science Equipment
