Unanswered questions leave ISS crews in holding pattern

Four weeks after a Progress space station supply ship spun out of control in a launch mishap, Russian engineers have not yet revealed what might have gone wrong, casting a cloud of uncertainty over downstream flights of unpiloted cargo ships as well as Soyuz crew ferry craft. The Progress M-27M/59P cargo craft was launched from the Baikonur Cosmodrome in Kazakhstan on April 28. The ascent appeared to go smoothly but at roughly the moment the supply ship reached orbit, something went wrong, damaging the cargo ship, imparting a rapid spin and boosting the craft to a higher-than-planned altitude. More

(Source: CBS News - May 28)