Every couple of years, the earth is hit by a body with energy near that of the Hiroshima bomb. Deposited high in the atmosphere these events causes little or no damage. On longer timescales, impacts occur with the potential to destroy regions, or whole civilizations. Learn about the impact threat, followed by a systematic development of the requirements to divert such an object.
Avoiding Armageddon: Diverting Asteroids with Nuclear Explosives
Tagged with science astronomy astrophysics asteroids
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Impact! by Professor Ian Morison
There is simple evidence that, even in recent times, the Earth has suffered major impacts from asteroids and comets. What dangers do they hold for our civilisation?
Major efforts now being made to detect those that might harm us and strategies are being developed to prevent their impacts. But we do have a problem with comets…
From: http://www.gresham.ac.uk/event.asp?PageId=108&EventId=971
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Big Picture Science
As the Worlds Turn —If you’re itching it get away from it all, really get away from it all, have we got some exotic destinations for you. Mars … Jupiter’s moon Europa … asteroids . Tour some enticing worlds that are worlds away, but ripe for exploration. Also, why private spaceships may be just the ticket for getting yourself into space, unless you want to wait for a space elevator. And, why one science journalist boasts of an infectious, unabashed, and unbridled enthusiasm for space travel.
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