An international group of space enthusiasts announced Monday a microphone will be sent to Mars in 2007 aboard a French spacecraft, easing the disappointment of a previous U.S. attempt that ended in failure. The Planetary Society said the microphone will be included in the French space agency’s NetLander mission, which will land four small spacecraft on Mars. The nonprofit group had funded a similar attempt once before, but it ended in failure when the microphone and the NASA spacecraft carrying it were lost.