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Impact! : the threat of comets and asteroids /
In Impact, Gerrit L. Verschuur offers an eye-opening look at catastrophic collisions with our planet. Perhaps more important, he paints an unsettling portrait of the possibility of new collisions with earth, exploring potential threats to our planet and describing what scientists are doing right now...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
New York :
Oxford University Press,
1997, ©1996.
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| Temas: | |
| Acceso en línea: | Texto completo |
MARC
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| 100 | 1 | |a Verschuur, Gerrit L., |d 1937- |e author. | |
| 245 | 1 | 0 | |a Impact! : |b the threat of comets and asteroids / |c Gerrit L. Verschuur. |
| 246 | 3 | 0 | |a Threat of comets and asteroids |
| 260 | |a New York : |b Oxford University Press, |c 1997, ©1996. | ||
| 300 | |a 1 online resource (xii, 237 pages) : |b illustrations, map | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a computer |b c |2 rdamedia | ||
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| 504 | |a Includes bibliographical references (pages 223-226) and indexes. | ||
| 588 | 0 | |a Print version record. | |
| 505 | 0 | 0 | |g ch. 1. |t Killer strikes -- |g ch. 2. |t Saga of the Chicxulub Crater -- |g ch. 3. |t Solar system debris -- |g ch. 4. |t Something about comets -- |g ch. 5. |t Birth of the earth -- |g ch. 6. |t Nineteenth-century perspective -- |g ch. 7. |t Twentieth-century rumblings -- |g ch. 8. |t Comet impacts in history -- |g ch. 9. |t On the edge of extinction -- |g ch. 10. |t Reconstructing the crime -- |g ch. 11. |t Death star of coherent catastrophism -- |g ch. 12. |t Craters and tsunamis -- |g ch. 13. |t Offering odds on impact -- |g ch. 14. |t Great comet crash of 1994 -- |g ch. 15. |t Aftermath -- |g ch. 16. |t Search -- |g ch. 17. |t Dodging the asteroids -- |g ch. 18. |t Our place in space. |
| 506 | |3 Use copy |f Restrictions unspecified |2 star |5 MiAaHDL | ||
| 520 | |a In Impact, Gerrit L. Verschuur offers an eye-opening look at catastrophic collisions with our planet. Perhaps more important, he paints an unsettling portrait of the possibility of new collisions with earth, exploring potential threats to our planet and describing what scientists are doing right now to prepare for this awful possibility. Every day something from space hits our planet, Verschuur reveals. In fact, about 10,000 tons of space debris fall to earth every year. | ||
| 520 | |a Mostly in meteoric form. But meteors are not the greatest threat to life on earth, the author points out. The major threats are asteroids and comets. The reader discovers that astronomers have located some 350 NEAs ("Near Earth Asteroids"), objects whose orbits cross the orbit of the earth, the largest of which are 1627 Ivar (6 kilometers wide) and 1580 Betula (8 kilometers). Comets, of course, are even more deadly. Verschuur provides a gripping description of the small. | ||
| 520 | |a Comet that exploded in the atmosphere above the Tunguska River valley in Siberia, in 1908, in a blinding flash visible for several thousand miles (every tree within sixty miles of ground zero was flattened). In addition, the author describes the efforts of Spacewatch and other groups to locate NEAs, and evaluates the idea that comet and asteroid impacts have been an underrated factor in the evolution of life on earth. | ||
| 533 | |a Electronic reproduction. |b [Place of publication not identified] : |c HathiTrust Digital Library, |d 2010. |5 MiAaHDL | ||
| 538 | |a Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. |u http://purl.oclc.org/DLF/benchrepro0212 |5 MiAaHDL | ||
| 583 | 1 | |a digitized |c 2010 |h HathiTrust Digital Library |l committed to preserve |2 pda |5 MiAaHDL | |
| 590 | |a eBooks on EBSCOhost |b EBSCO eBook Subscription Academic Collection - Worldwide | ||
| 650 | 0 | |a Comets. | |
| 650 | 0 | |a Asteroids. | |
| 650 | 0 | |a Impact. | |
| 651 | 0 | |a Earth (Planet) | |
| 650 | 0 | |a Evolution (Biology) | |
| 650 | 2 | |a Minor Planets | |
| 650 | 6 | |a Comètes. | |
| 650 | 6 | |a Astéroïdes. | |
| 651 | 6 | |a Terre. | |
| 650 | 7 | |a SCIENCE |x Earth Sciences |x Sedimentology & Stratigraphy. |2 bisacsh | |
| 650 | 7 | |a Asteroids. |2 fast |0 (OCoLC)fst00819290 | |
| 650 | 7 | |a Comets. |2 fast |0 (OCoLC)fst00869108 | |
| 650 | 7 | |a Evolution (Biology) |2 fast |0 (OCoLC)fst00917302 | |
| 650 | 7 | |a Impact. |2 fast |0 (OCoLC)fst00968053 | |
| 651 | 7 | |a Earth (Planet) |2 fast |0 (OCoLC)fst01860481 | |
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| 650 | 1 | 7 | |a Meteoren. |2 gtt |
| 650 | 1 | 7 | |a Planetoïden. |2 gtt |
| 650 | 1 | 7 | |a Risico's. |2 gtt |
| 776 | 0 | 8 | |i Print version: |a Verschuur, Gerrit L., 1937- |t Impact!. |d New York : Oxford University Press, 1997, ©1996 |z 0195119193 |w (OCoLC)38723988 |
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