Exoplanet High-5

Exoplanet High-5

(alt-text)

Tau Ceti is farther away, so it took me 36 years to start the war over updog.

What If? is now on YouTube!
Check out the first video for the answer to
“What if we aimed the Hubble Telescope at Earth?”
and follow xkcd’s What If? The Video Series channel to be notified about each new video.