On 2-3-09(Monday) an asteroid went pass the earth with a force of 1000 atomic bombs. It had the same mass of the rock which got blasted in Siberia in 1908.The Siberian blast in 1908 had resulted in a vast explosion but hadn't caused any life destruction because it was on a remote area.The recent one (Near Earth Object), estimated at around 30 meters in diameter, passed 40,000 miles from the Earth's surface on the night of March 2, 2009. Scientists predict that this rock(2009 DD45 )will visit us again in the future.
It is officially accepted that an asteroid had caused the extinction of dinosaurs.So the Scientists are trying to trace all the NEO's that may hit the earth.The widely accepted theory is that the dinosaurs died out over a period of months or years after the asteroid impact at Chicxulub, Mexico. Under this theory, the asteroid impact would have thrown enough dust into the atmosphere to block out the sun, leading to a cold, dark winter that directly reduced the amount of plant life on Earth.But a new team of scientists states that lots of life died immediately
Now we have been able to track about 90% of the NEO's.The 2009 DD45 was discovered only two days ago by Rob McNaught at Siding Spring Observatory in Australia, when it was a dim speck about 1.5 million kilometers away. It became brightest when it passed closest to Earth at 13:44 Universal Time, which is 5:44am Pacific Time, and has been getting dimmer ever since. At the point of closest approach 2009 DD45 was over the Pacific Ocean near Tahiti, which means it could be observed from Australia, Japan, and China, but not from North America or Europe.We will come across that asteroids in the future years
So we ought to be careful because one of those asteroids out there can lead us to extinction. But looking on the bright side if that asteroid(which caused the extinction of dinosaurs)hadn't hit the earth we won't be here talking to each other
