Top 10 messages to send to E.T.

Fear of alien invasion shouldn’t prevent pursuit of ‘active SETI’

Arecibo Observatory

In 1974, the Arecibo radio telescope in Puerto Rico beamed a message toward the star cluster M13, 21,000 light-years from Earth, in hopes that an intelligent civilization might receive it. Scientists with the SETI project, which has been listening for alien life for decades, now propose sending more such messages in hopes that someone will finally answer. 

NAIC - Arecibo Observatory/Wikimedia Commons

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Astronomy

From the Nature Index

Paid Content