astronaut, 宇航員/ 太空人

In this January 13, 2017 photo made available by NASA, astronaut Peggy Whitson, center, floats inside the Quest airlock of the International Space Station with Thomas Pesquet, left, and Shane Kimbrough before their spacewalk. On Wednesday, April 5, 2017, NASA announced that Whitson will remain on the ISS until September 2017, adding three months to her original mission. (Photo by NASA via AP Photo)
The Day in Photos – April 6, 2017