[Phys-seminars] 2011-03-17 Physics Colloquium

physics at bgu.ac.il physics at bgu.ac.il
Sun Feb 6 11:18:32 IST 2011


Physics Colloquium

  DATE: 17-03-2011

  TIME: 3:30pm (Thu)

  PLACE: Physics building (#54) room 207

TITLE: 
Visitors from outer space

SPEAKER: 
Dr. Noah Brosch, TAU and Wise Observatory

ABSTRACT/COMMENTS:
The Earth is continuously bombarded by celestial bodies of varying sizes.
When these are in space they are called \"meteoroids\"; they become meteors
upon interaction with the atmosphere and their remains found on the ground
are meteorites. Most are so small that they evaporate or disintegrate in the
upper atmosphere. The total incoming mass flux of meteoric material is estimated
at 100,000 tons per year over the entire surface of the Earth. The origins of
these bodies are the grinding of asteroids, the disintegration of comets, and
the influx of interstellar matter. I shall review these populations, point out
their interaction mechanisms with the Earth\'s atmosphere, and discuss novel
ways of their studies.





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