To enjoy free access to all high-quality "In depth" content, including topical features, reviews and opinion sign up
The eerie silence
Mar 2, 2010
Half a century after it began, the quest to find life elsewhere in the universe has drawn
an almost total blank. Paul Davies calls for the search to be relaunched by examining not just radio signals but all physical and astronomical anomalies. Don't miss the author's free online lecture on this topic on 31 March – follow this link for
more details.
We hope you've enjoyed the short summary of this article.
To continue reading, and for unlimited access to all content on this site
you will need to complete a short sign-up process.
It's free of charge, and will only take a couple of minutes of your time.
If you've signed up before, simply sign in below.
![[IOP]](http://images.iop.org/cws/icons/themes/phw/colophon-small.png){kind=icon}
