xkcd's What If? (2023) | All episodes

What if we aimed the Hubble Telescope at Earth?

Release Date: Nov 29, 2023

What would a magnitude 15 earthquake be like?

Release Date: Dec 5, 2023

What if NASCAR had no rules?

Release Date: Dec 19, 2023

What if Earth suddenly stopped spinning?

Release Date: Jan 9, 2024

What if you threw a baseball at nearly light speed?

Release Date: Feb 6, 2024

Could you make an umbrella out of lasers?

Release Date: Feb 20, 2024

Would a Submarine Work as a Spaceship?

Release Date: Mar 5, 2024

What if you swam in a nuclear storage pool?

Release Date: Apr 2, 2024

What if everyone jumped at once?

Release Date: Apr 16, 2024

What if all the lightning on Earth struck the same place at once?

Release Date: May 7, 2024

If all humans died, when would the last light go out?

Release Date: May 28, 2024

What if you drained the oceans?

Release Date: Jun 18, 2024

What if you tried to print Wikipedia?

Release Date: Jul 9, 2024

What if we teleported the oceans to Mars?

Release Date: Aug 13, 2024

Could you survive a nanosecond on the Sun?

Release Date: Sep 3, 2024

What if a glass of water were LITERALLY half empty?

Release Date: Sep 24, 2024

What if Earth grew 1cm every second?

Release Date: Oct 15, 2024

What if everyone pointed a laser at the moon?

Release Date: Nov 5, 2024

But what if we tried MORE power?

Release Date: Dec 3, 2024

What if we put a pool on the moon?

Release Date: Dec 24, 2024

What if you built a billion-story building?

Release Date: Feb 11, 2025

What if the wise men kept walking after Jesus's birth?

Release Date: Mar 4, 2025

What if the Earth rotated 90 degrees?

Release Date: Apr 1, 2025

What if the sun suddenly went out?

Release Date: Apr 15, 2025

What if you literally had all the money in the world?

Release Date: May 6, 2025

What if you used a flamethrower as a snowblower?

Release Date: May 27, 2025

What if you funneled Niagara Falls through a straw?

Release Date: Jun 17, 2025

What if the moon turned into a black hole?

Release Date: Jul 8, 2025

What if you had a mole of moles?

Release Date: Aug 19, 2025

What if the Moon were made entirely of electrons?

Release Date: Sep 9, 2025

Could we survive eating only humans?

Release Date: Sep 30, 2025

Can you drive west to lengthen the sunset?

Release Date: Oct 21, 2025

What if ALL the sun's power was focused in one place?

Release Date: Nov 11, 2025

Can you power your computer by typing?

Release Date: Dec 2, 2025

How long would you survive with no DNA?

Release Date: Jan 20, 2026

What if you made a jetpack using rifles?

Release Date: Feb 10, 2026