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We are used to anticipating danger from outer space . A huge almost unknown space hostile to humans and no wonder colossal explosions take place asteroids and comets travel at tremendous speed . There are black holes and all this can potentially cause the death of the earth but what about something small for example an ordinary sewing needle what if one finds itself in space accelerates to the speed of light and then crashes into our planet .   Any object consisting of matter can't move at the speed of light or faster so scientists from NASA are unlikely to ever consider such a disaster well I will do it for them today you'll know how dangerous such small things can be if they are properly accelerated and at the same time, you'll learn about another strange scenario of the end of the world . Our planet is constantly bombarded by various cosmic bodies we don't even notice most of them they just burn up in the atmosphere .     Sometimes celestial b...

Apophis was discovered by  Roy A. Tucker ,  David J. Tholen  &  Fabrizio Bernardi  on June 19, 2004. It is a 400 meters wide & 26.99 billion kg heavy asteroid with an average orbital speed of 30.728 km/s. Astronomers calculated that there's a small possibility of Apophis hitting Earth in 2029 or 2036. So, what will happen if Apophis hits the Earth? On hitting Earth it will produce an Energy of more than  100 thousand Hiroshima bombs , which is enough to destroy an entire country. In case it lands in highly populated areas or countries like India, China, or America then it will kill millions of people within a few minutes of destruction. Now you might be wondering how do we stop this Asteroid from hitting Earth? Well, today we don't have any good practical solution to stop an asteroid that big. But, here are a few ideas that might be helpful in the future. Laser Beam -  By pointing a strong laser beam on the asteroid we can actually change...