Bill Nye explains how we can protect our planet from asteroids

Bill Nye, the inspiring figure of decades off science shows in USA, explain how we can protect our selves from an asteroid attack and all of the methods involve changing the asteroid’s speed by a ten millionth metters per second and then you’ll make it go past Earth.

How can you change the speed of an asteroid? First, you need to know that there is an asteroid coming and you need to calculate its trajectory. Then you have three choices: use rockets to blast in the asteroid, use a big ship that can change the trajectory through its gravity alone or use lots of lasers to shoot at the asteroid surface facing the Sun.

Interesting methods and let’s hope we won’t have to use them.

Via ASAP Science.

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