The day NASA's Fermi dodged a 1.5-ton bullet
Wednesday, May 1, 2013 - 10:01
in Astronomy & Space
NASA scientists don't often learn that their spacecraft is at risk of crashing into another satellite. But when Julie McEnery, the project scientist for NASA's Fermi Gamma-ray Space Telescope, checked her email on March 29, 2012, she found herself facing this precise situation.