Humans have pondered aliens since medieval times

Wonder about civilizations on other worlds goes back centuries

Allen Telescope Array

TO AN ANCIENT QUESTION, NO REPLY  The Allen Telescope Array, a suite of radio antenna dishes in California, has been seeking signals from alien life since 2009, so far without success.

© David Garden

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 Science & Society

From the Nature Index

Paid Content