Study: fewer asteroids hit Earth's surface
Posted: Sun, Jul 20, 2003, 12:57 PM ET (1657 GMT)
Fewer large asteroids will strike the surface of the Earth than previously thought because they will instead break up in the atmosphere, according to a new study. In a paper published in the latest issue of the journal Nature, English and Russian scientists reported on a new computer model that drastically reduces the number of large asteroids that would strike the surface. According to their model, asteroids 200 meters in diameter and larger strike the surface once every 160,000 years, rather than once every 2,500 years that previous studies have concluded. The difference is that a far larger number of asteroids break up in the Earth's atmosphere; these still would have destructive effects, but would not generate effects like tsunamis.
Fewer large asteroids will strike the surface of the Earth than previously thought because they will instead break up in the atmosphere, according to a new study. In a paper published in the latest issue of the journal Nature, English and Russian scientists reported on a new computer model that drastically reduces the number of large asteroids that would strike the surface. According to their model, asteroids 200 meters in diameter and larger strike the surface once every 160,000 years, rather than once every 2,500 years that previous studies have concluded. The difference is that a far larger number of asteroids break up in the Earth's atmosphere; these still would have destructive effects, but would not generate effects like tsunamis.
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Saturday, August 29
Trump announces creation of US Space Academy
The Hill — 6:31 am ET (1031 GMT) Trump Creates a Space Academy and Honors the Artemis Astronauts
New York Times — 6:31 am ET (1031 GMT) Trump signs order to create a space service academy
Task & Purpose — 6:30 am ET (1030 GMT) Trump signs executive order creating US Space Academy
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New York Post — 6:29 am ET (1029 GMT) |
