Blasting rocks off planets
Article Abstract:
Impact velocities of meteorites can exert enough pressure on surfaces to cause material to be ejected at a speed approaching escape velocities. Experiments with high-speed projectiles support the theory that the existence of interplanetary debris may be caused by meteorites colliding with planetary surfaces at high pressures. Pressures of 100-300 kbar would not result in the melting or pulverization of ejected material but will eject material instead.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Tunguska comes down to Earth
Article Abstract:
The explosion over the Siberian taiga near the Tunguska river on Jun 30, 1908 was the result of a stony meteorite fragmenting in the atmosphere. It was long believed that a meteorite could deliver as much energy as this one did and not leave a crater only if it was of very low density. However, an ordinary stony meteorite it may have produced the explosion had it undergone cataclysmic fragmentation fueled by aerodynamic action.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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The 1908 Tunguska explosion: atmospheric disruption of a stony asteroid
Article Abstract:
The explosion over the Siberian taiga near the Tunguska river on Jun 30, 1908 was the result of a stony meteorite fragmenting in the atmosphere. It was long believed that a meteorite could deliver as much energy as this one did and not leave a crater only if it was of very low density. However, an ordinary stony meteorite may have acted in just this way had it undergone cataclysmic fragmentation fueled by aerodynamic action.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
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