19 fevereiro 2007

CONTAMINANTES


It may hit Earth ... but don't worry, we've got a plan: A £150 MILLION space mission should be launched to deflect an asteroid which is set to pass dangerously close to Earth, experts warned yesterday.
The call for action to protect the world from Apophis - named after the Egyptian god of destruction - came from a coalition of astronauts, engineers and scientists with close links to US space agency NASA.
Scientists have estimated the asteroid has a one-in-45,000 chance of striking Earth on 13 April, 2036. Travelling at 28,000mph it could release 80,000 times the energy of the Hiroshima bomb.
The group believes the United Nations should assume responsibility for a space mission - using a vessel called a "gravity tractor" - to knock Apophis off course.
UN urged to adopt asteroid impact treaty: The number of known near-Earth asteroids which have a chance of hitting Earth in the next 100 years currently stands at 127, but that figure is expected to rocket to as high as 10,000 by 2020 , after Congress changes NASA's mandate to include surveying space for such threats.

Lista actualizada de asteróides que podem embater na Terra em Near Earth Object Program.