Building the Most Powerful Laser in the World

We need to build a powerful laser, powerful enough to explode the asteroids.
 
wow, that's just unimaginable!

"To get a sense of how much power an exawatt contains, compare it to a typical filament light bulb consuming about 100 W of electricity. The capacity of the entire U.S. electrical grid is about 10 billion times more than this, or about 1 terawatt. So the entire grid could supply enough energy to continuously power 10 billion 100 W light bulbs. A petawatt is 1,000 times more power than that, and an exawatt is 1,000 times greater than a petawatt."

mind boggling!
 
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