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NASA astronaut Scott Kelly wears his space suit a day before his first spacewalk. Kelly is one of two astronauts who ventured outside the International Space Station on Wednesday to make upgrades.
Astronaut Scott Kelly has been living on the International Space Station （ISS） since March 28. And just like any other home， the ISS needs some housekeeping， in the form of routine work and repairs.
That is why Kelly and fellow astronaut Kjell Lindgren performed a spacewalk outside the station on Wednesday. The operation began at 8：03 AM EST and lasted for more than seven hours. It was the first spacewalk for both men.
Outside Work
The ISS has been in use for 15 years， and has hosted more than 200 people， including astronauts， and private tourists. The station needs to be upgraded from time to time.
The two astronauts also installed a cover on a key scientific instrument on the station to protect it from the hot temperatures of space.
As the more senior astronaut， Kelly led the spacewalk and wore the red striping of a leader on his spacesuit. However， Lindgren dealt with some of the more challenging parts of the job in some of the tighter areas of the station， as a result of a physical advantage he has over Kelly.
Prep Time
During a spacewalk， the simplest work becomes a difficult task. Kelly and Lindgren spent months training and practicing for the operation. The preparation began in NASA’s Neutral Buoyancy Lab （NBL）. Here astronauts become used to working in an environment similar to the one outside the space station.
Even getting the space suits ready can take days. Their air systems must be washed with water to remove any dirt. And while each suit is built to fit perfectly on the astronaut who will wear it， adjustments need to be made right up to the time when the spacewalk begins. The adjustments address any changes in the astronauts’ bodies that have occurred as a result of being in a gravity-free environment. For example， their spines may become a little longer.
Wrapping Up
During the spacewalk， Kelly and Lindgren received updates from NASA that provided them with any instructions， right down to how many turns are needed to tighten a bolt.
Once the task was successfully completed， the astronauts re-entered the ISS. But they will not remain inside the station for too long. Both men will perform a second spacewalk on November 6.
Vocabulary
upgrade v. 改善
striping n. 表示等级的条纹
adjustment n. 调节
spine n. 脊椎
bolt n. 插销
王 扬 改编
Astronaut Scott Kelly has been living on the International Space Station （ISS） since March 28. And just like any other home， the ISS needs some housekeeping， in the form of routine work and repairs.
That is why Kelly and fellow astronaut Kjell Lindgren performed a spacewalk outside the station on Wednesday. The operation began at 8：03 AM EST and lasted for more than seven hours. It was the first spacewalk for both men.
Outside Work
The ISS has been in use for 15 years， and has hosted more than 200 people， including astronauts， and private tourists. The station needs to be upgraded from time to time.
The two astronauts also installed a cover on a key scientific instrument on the station to protect it from the hot temperatures of space.
As the more senior astronaut， Kelly led the spacewalk and wore the red striping of a leader on his spacesuit. However， Lindgren dealt with some of the more challenging parts of the job in some of the tighter areas of the station， as a result of a physical advantage he has over Kelly.
Prep Time
During a spacewalk， the simplest work becomes a difficult task. Kelly and Lindgren spent months training and practicing for the operation. The preparation began in NASA’s Neutral Buoyancy Lab （NBL）. Here astronauts become used to working in an environment similar to the one outside the space station.
Even getting the space suits ready can take days. Their air systems must be washed with water to remove any dirt. And while each suit is built to fit perfectly on the astronaut who will wear it， adjustments need to be made right up to the time when the spacewalk begins. The adjustments address any changes in the astronauts’ bodies that have occurred as a result of being in a gravity-free environment. For example， their spines may become a little longer.
Wrapping Up
During the spacewalk， Kelly and Lindgren received updates from NASA that provided them with any instructions， right down to how many turns are needed to tighten a bolt.
Once the task was successfully completed， the astronauts re-entered the ISS. But they will not remain inside the station for too long. Both men will perform a second spacewalk on November 6.
Vocabulary
upgrade v. 改善
striping n. 表示等级的条纹
adjustment n. 调节
spine n. 脊椎
bolt n. 插销
王 扬 改编