This site collected goodwill messages from the public for 13 days in August 2009 which were transmitted to Gliese 581d, a planet outside our Solar System which may support life.

Messages were moderated by staff at COSMOS magazine; those accepted for inclusion in the transmission have been published on this site. Transmission occurred at midday on Friday 28 August 2009 and was undertaken by the NASA/CSIRO Canberra Deep Space Communication Complex at Tidbinbilla, Australia, using the 70-metre main antenna known as DSS43.

Thanks for taking part in this National Science Week event!

You can read our best messages below (see BEST MESSAGES SO FAR), see a list of what we think are the top messages received, or browse through all messages here. You can also search messages by the names of people who have successfully left a message, their email addresses or by message content.