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What If? Serious Scientific Answers to Absurd Hypothetical Questions
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"What If? Serious Scientific Answers to Absurd Hypothetical Questions" Quotes

"What If?" provides scientifically grounded and often humorous answers to bizarre and imaginative questions posed by curious readers.

Quotes

If you could stop time, would you ever start it again?

Randall Munroe

timehypotheticalcuriosity

What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?

Randall Munroe

scienceearthphysics

What if you tried to hit a baseball pitched at 90% the speed of light?

Randall Munroe

sportsphysicshypothetical

Is it possible to build a jetpack using downward-firing machine guns?

Randall Munroe

engineeringinventionhypothetical

What if you dove into a pool of spent nuclear fuel?

Randall Munroe

nuclearsafetycuriosity

What would happen if everyone on Earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?

Randall Munroe

massearthhypothetical

How much Force power can Yoda output?

Randall Munroe

fictionpowerstar wars

What if a rainstorm dropped all of its water in a single giant drop?

Randall Munroe

weathersciencehypothetical

If every human somehow simply disappeared from the face of the Earth, how long before the last artificial light source goes out?

Randall Munroe

futuresocietyhypothetical

How long could a nuclear submarine last in orbit?

Randall Munroe

spacetechnologyhypothetical