Why blowing up asteroids won't save Earth | Sci Fi Science

  • Trisha Mahajan
  • Aug 1, 2017

You've seen it a lot of times on the wide screen: Scientists spot an enormous asteroid tearing toward Earth and the main seek after humanity is to send a group to plant an atomic bomb inside the looming monster. Regardless of a few dramatic mishaps, the gutsy group is eventually effective, and the space rock detonates into a great many pieces. Earth is spared once more from certain fate. Films like "Deep Impact" and "Armageddon" make it appear to be so natural. Without a doubt atomic weapons that can devastate whole urban communities contain enough dangerous energy to blow a giant space shake to bits, correct?

The appropriate response is yes and no. To begin with, space rocks come in all shapes and sizes. Ceres, the biggest known space rock, extends 580 miles (933 kilometers) in breadth, while one of the littlest on record, 1991 BA, measures 20 feet (6 meters) over. A space rock bigger than 6.2 miles (10 kilometers) in breadth is considered "extinction class," or sufficiently powerful to crush life on Earth in the event that it slams into our hapless planet.

Actually, a nuclear bomb could obliterate a smaller asteroid, however it's not these smaller substances that represent a danger to Earth's security. The asteroids that would be truly troubling - those bigger than 1,312 feet (400 meters) - wouldn't be effortlessly wiped out by such a bomb. Without a doubt, incredible hunks of one may sever, yet insufficient to kill the peril. A 2007 NASA report demonstrated that planting a nuclear bomb on or under the surface of an asteroid would in all likelihood make it crack into a few pieces - and huge bits of a significantly bigger asteroid can at present be truly hazardous on the off chance that they're tearing toward the Earth.