Night EVA
Astronauts Rick Mastracchio and Mike Hopkins perform a spacewalk outside the International Space Station on Christmas Eve, 2013.
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/51/92/519296a4-8d53-4409-bad2-d896cbc3030e/bfqif-acyaa7xxqjpg_large.jpg)
Astronauts Rick Mastracchio and Mike Hopkins perform a spacewalk outside the International Space Station on Christmas Eve, 2013.