Asteroid Impacts

Transcription

Asteroid Impacts
Asteroid Impacts
Debris in the Solar System
Comet Hale-Bopp
Comet Borrelly
Phoebe
Earth in the Sights
The Little Ones
Willamette meteorite at AMNH
Chicago, March 2003. 10 cm
Rate: 1/house/107 years
Peekskill NY
1992
Near Misses
Grand Tetons, 1972
Asteroid 2004 MN4: will miss by 30,000 km in 2029
Asteroid 2004 FH: missed by 42,500 km on March
19, 2004. 30m diameter. Probably would have burned up.
Asteroid 2002 EM7: missed by 480,000 km on 3/8/2002.
Diameter 70 m. One this size hits every 6400 years.
Tunguska was this size.
Asteroid 1950 DA: 0.3% chance of hitting on 3/16/2880.
1.1km diameter
When The Big One Hits
And it Has
Barringer
crater,
Arizona
Chicxulub crater,
Yucatan
Manicouagan crater,
Manitoba

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