Two Russian cosmonauts will venture outside the International Space Station at 11 a.m. EST Tuesday, Dec. 11, to conduct a six-hour spacewalk. Live coverage will begin at 10 a.m. on NASA Television and the agency’s website. Expedition 57 Flight Engineers Oleg Kononenko and Sergey Prokopyev of Roscosmos will use this spacewalk to examine a section of the external Two Russian cosmonauts will venture outside the International Space Station at 11 a.m. EST Tuesday, Dec. 11, to conduct a six-hour spacewalk. Live coverage will begin at 10 a.m. on NASA Television and the agency’s website. Expedition 57 Flight Engineers Oleg Kononenko and Sergey Prokopyev of Roscosmos will use this spacewalk to examine a section of the external