NASA warns that an asteroid the size of a bus is approaching the earth at a speed of 18,400 kmph. This is in fact a danger for the earth. Many may not believe it but is a real threat to the earth and people living in it, humans, animals and everything. The NASA has predicted that it would happen by next month or so, probably by September the least. But there is nothing that could be done to protect it or to prevent it from happening because there is no essential backup or defense to help in stopping this.
The NASA has also said that these kind of asteroids back in 2000 were the ones which killed and wiped off most and basically all dinosaurs in the world. Right now there is no existence of dinosaurs. A situation like that should not happen to earth again otherwise many precious things would be lost and it might not be retrieved again. Better to be prepared than to say sorry and regret about it later which there is no use because then that time everything bad would have already happened to everyone in the world.
The asteroid is estimated and can be compared to the London Bridge height, which is 310m and that of Burj Khalifa as 828m, the tallest building in the world in Dubai. The Asteroid 2000 QW7 is between 290m and 650m long. But the USA has said that this prediction is wrong and there would not be like a thing happening. But NASA is confident and is so sure about it. They are saying to take precautions to stop it otherwise they precious thing, which is the earth would be lost forever. Then no one would be able to get it back, even if they tried and worked so hard for it.