This Phoenix mini-DVD, made of silica glass launched in August 2007 on its way to Mars on the spacecraft Phoenix, is seen in this undated publicity photograph. It is encoded with a collection of scientific and science-fiction texts about Mars, depictions of Mars in art and messages to future settlers of Mars. Also included are 250,000 names of Planetary Society members and others who signed up to send their name to Mars. REUTERS/The Planetary Society/Handout (UNITED STATES). NO SALES. NO ARCHIVES.