Autor Tema: Kineski znastvenici predlazu defplektiranje asteroida "Apophis"  (Posjeta: 722 vremena)

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Offline Koki007

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da ne pisem sve ponovo evo clanka sa Slashdot-a: http://science.slashdot.org/story/11/08/19/1437213/Chinese-Researchers-Propose-Asteroid-Deflection-Mission


"Researchers in China have proposed sending a solar sail-driven probe to hit the asteroid Apophis to make sure it has no chance of going through a 'keyhole' near earth in 2029. If it goes through the keyhole, then it will hit the earth seven years later. The reason why they need to use a solar sail is because they want the very small probe (~10kg) to hit the asteroid in the opposite direction, a retrograde orbit which would otherwise require an insane amount of fuel (after being put on an escape trajectory, it would need to first cancel out the earth's orbital momentum and then basically speed up to a likewise high velocity in the opposite direction). They are doing this to hit the asteroid at a very high impact speed. While Apophis may not literally be capable of wiping us out (it 'only' weighs 46 million kilograms), it might be able to wreck our civilization."



Zanimljivo da bi sonda bila tezine samo 10 Kg.. ocito bi ju solarno jedro moralo poprilicno ubrzati, po nekoj logici O.o