During a spacewalk outside the International Space Station, Russian cosmonaut Sergey Prokopyev jettisoned a 5-kilogram bundle of obsolete hardware into the vacuum of space. Credit: NASA | mash mix by Space.com's Steve Spaleta
During a spacewalk outside the International Space Station, Russian cosmonaut Sergey Prokopyev jettisoned a 5-kilogram bundle of obsolete hardware into the vacuum of space. Credit: NASA | mash mix by Space.com's Steve Spaleta