Initially, the probability of an impact was 1 in 83, which represented a 1.2% chance of collision. The odds have now increased to 1 in 43, or a 2.3% chance of impact.
NASA’s Goddard Space Flight Center in Greenbelt, Md., wants nothing to do with the microscopic dust particles clinging to your clothing. So before you enter the room, you first must stand in a chamber ...