NASA Loses Contact With Comet Explorer

linuxwrangler writes: "According to this article in the SF Chronicle, NASA lost contact with the Comet Nucleus Tour ('Contour') satellite just after firing engines to boost it out of orbit. The spacecraft was launched July 3 with the mission to probe comet Encke in 2003, Schwassman-Wachmann 3 in 2006 and perhaps d'Arrest in 2008. NASA is calculating possible trajectories in an attempt to search for and contact the probe. Let's hope they regain contact/control. This sounded like a cool project." Liquor adds: "The BBC has a report that indicates that the launch window for the $159M spacecraft closes tomorrow. If it hasn't successfully fired the engine by then, it can't make the planned mission."