Science: Late last week NASA announced that it didn’t know the whereabouts of NanoSail-D. The 4-kg “nanosatellite” (shown below) was designed to test the feasibility of propelling spacecraft with solar sails that unfurl in space. At this point, it’s not known whether the sails failed to deploy, the spacecraft’s communication equipment failed to operate, or both. NanoSail-D is one of three small probes that formed the payload of NASA’s FASTSAT spacecraft.
