What if you would throw a ball at the speed of light?

Randall Munroe, the creator of XKCD and What IF XKCD, explains what would happen if you were to throw a baseball with a speed near the speed of light. If you throw a ball at 90% the speed of light then the air molecules get hit so hard that thermonuclear reaction occur and a flood of X-rays will spread out in a bubble with plasma inside.

Then a fireball will engulf the entire stadium resulting, in a short time of 40 nanoseconds, in a big explosion with a mushroom cloud rising over a good part of the city where the stadium was.

He also replies to many “what if” questions from which we can better understand how the things work around us and why some ideas cannot be simply be put in practice. Follow his What Ifs here.

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