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Asteroid and comet impacts: the ultimate environmental catastrophe.

David Morrison1

  • 1Working Group on Near Earth Objects, International Astronomical Union 14660 Fieldstone, Saratoga, CA 95070, USA. dmorrison@arc.nasa.gov

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|July 18, 2006
PubMed
Summary

Cosmic impacts are rare but catastrophic natural hazards. Space technology can predict and prevent these global threats, but public awareness is crucial for international action.

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Area of Science:

  • Planetary Science
  • Natural Hazards
  • Risk Assessment

Background:

  • Cosmic impacts are extremely rare but pose a severe threat to global civilization.
  • These events have the potential for mass casualties and widespread destruction.
  • Despite their severity, cosmic impacts are a recently recognized natural hazard.

Purpose of the Study:

  • To highlight the extreme nature of cosmic impacts as a natural hazard.
  • To emphasize the potential for prediction and mitigation using space technology.
  • To underscore the need for increased public awareness to drive international action.

Main Methods:

  • Review of cosmic impact data and hazard assessment.
  • Analysis of space technology capabilities for detection and deflection.

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  • Assessment of public awareness levels and their impact on policy.

    • Main Results:

    • Cosmic impacts are low-probability, high-consequence events.
    • Space technology offers viable methods for precise prediction and avoidance.
    • Current public awareness is insufficient to mobilize concerted international efforts.

    Conclusions:

    • Cosmic impacts represent a significant, albeit rare, global threat.
    • Technological solutions for impact mitigation are feasible.
    • Enhanced public awareness is essential for fostering international cooperation and preparedness.