At less than half the cost of a single round trip in the space shuttle, NASA’s $200-million, seven-year-long Stardust mission to comet Wild 2 was an economical excursion into space. Yet Stardust scored a remarkable number of firsts: Stardust returned the first solid samples from space since the 1970s moon missions; These were the first … Continue reading A Comet Comes to the Advanced Light Source