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Threats to Earth
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Astronomy
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Threats to Earth
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Contents
Threats to Earth
Objectives
Asteroid Ida with it’s moon Dactyl
Asteroids
Collisions?
Objectives
Halley’s Comet Reappears every 76 years Image from 1986
Hale-Bopp as seen from Craig County, VA in 1997
Hale-Bopp as seen from Alexandria, VA in 1997
Hale-Bopp as seen from Wyoming in 1997
Yerkes Observatory
Last added presentations
Gravitation
Mechanical, Electromagnetic, Electrical, Chemical and Thermal
Newton’s law of universal gravitation
Health Physics
Direct heat utilization of geothermal energy
Sound
Friction
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