Australians will have the opportunity to send text-like messages to potential intelligent life beyond Earth thanks to an initiative to be launched today to mark National Science Week. From today until 5.00 pm Monday, 24 August, the public can visit www.HelloFromEarth.net to post goodwill messages that will be transmitted to the nearest Earth-like planet outside our Solar System likely to support life. The planet - Gliese 581d - is eight times the size of Earth and some 20 light years away (194 trillion km). It was first discovered in April 2007. Due to its size, it is classified as a 'Super Earth'.