NASA Sent Two Astronauts For An Emergency Repair Mission At The $100 Billion Cost ISS By Jaden Jane | May 23, 2017 02:24 PM EDT NASA sent two US astronauts to float outside the ISS. Their mission is for an emergency repair for the loss of one computer last Saturday. Business Insider reported that two astronauts from NASA were sent for a mission outside the International Space Station (ISS). The two astronauts needed to replace one of the computer that has failed or lost communication last Saturday. According to The Verge, the two astronauts performed a spacewalk to finish and carry out their service maintenance for the ISS. The two astronauts were non-other than astronauts Peggy Whitson and Jack Fischer. Their tasks were to replace a data relay box that has failed to work last Saturday. Station Commander Peggy Whitson herself repaired the ISS's exterior framework located at the center backbone where the failed computer can be found. The computer has a weight of 23 kilograms or less than 50 pounds and is about the size of a microwave oven. The failed computer is one among the two computers which control the equipment in the ISS like cooling loops, robotics gear, radiators, solar power panels and the US side of the station. Watch video On the other hand, among the two astronauts, Jack Fischer, installed the set of wireless communication antennas at the location of the U.S. Destiny Laboratory. Both the spacewalk of the two astronauts lasted for less than three hours. The International Space Station or ISS is a $100 billion space station project of 15 nations headed by the US. While the two astronauts who conducted, a spacewalk are both veterans when it comes to their duties. Astronaut Whitson is the first woman in space that is given recognition being the station Commander. She is a veteran who performed 10 previous space missions and is listed top three among the world's most experienced spacewalkers. Along with Shane Kimbrough, she installed the failed computer during her March 30 spacewalk. The two astronauts from NASA were able to fulfill the mission on the repair of the International Space Station or ISS.