skip to main content

XKCD has SETI’s number

Explore Drake's equation and its role in estimating the number of civilizations in the galaxy. Is SETI truly a good idea?

Written byPhil Plait
| 1 min read
Follow on GoogleGoogle News Preferred Source
Placeholder image

Newsletter

Sign up for our email newsletter for the latest science news

Sign Up

For the record, I think SETI is a good idea, and that most people misunderstand Drake's equation (it's a way of estimating the number of civilizations in the galaxy, not a way of determining their number), but still, this XKCD cartoon is funny (click to see the punch line):

Placeholder image showing Earth from space with an alert icon and the message ‘This image is no longer available.’

Hold the mouse over the picture on the XKCD page to see what he really thinks. I disagree with him on that, too. We've only just started looking. :-)

Meet the Author

Stay Curious

JoinOur List

Sign up for our weekly science updates

View our Privacy Policy

SubscribeTo The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Subscribe