Episode 0649 · Jun 24, 1999 · 2h 31m
June 24, 1999: Near-Earth Asteroids & the Sun - Roy A. Tucker
Roy A. Tucker explains the search for near-Earth asteroids and the observing work needed to find objects that may pass dangerously close to the planet.
Art Bell asks how astronomers detect, confirm, and calculate the orbit of a faint moving target, and how the Sun creates blind spots in planetary defense. Tucker discusses impact probability, warning time, amateur contributions, and the difference between a close approach and an actual threat.
Art Bell asks how astronomers detect, confirm, and calculate the orbit of a faint moving target, and how the Sun creates blind spots in planetary defense. Tucker discusses impact probability, warning time, amateur contributions, and the difference between a close approach and an actual threat.
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From the original ArtBell.com archive
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