Gravitational Waves

Gravitational Waves

(alt-text)

"That last LinkedIn request set a new record for the most energetic physical event ever observed. Maybe we should respond." "Nah."

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.