It is reported that at 07:38 Eastern time on October 18, astronauts Christina Koch (Christina Koch) and Jessica Mayer (Jessica Meir) went out of the International Space Station one after another and flew into dark space to begin their first all-female spacewalk mission in history.
This is Koch's fourth spacewalk, Mel's first. This task is mainly to replace a battery power controller outside the space station. The two astronauts accomplished the task brilliantly.
On October 18 local time, NASA astronauts played with selfies while they were on a mission in space. Image source: NASA website.
In addition to the mission, Koch and Mel are busy, playing "space selfie". From the photos released by NASA, Koch can be seen smiling at us across the spacesuit and helmet, and they can also be seen floating in space due to weightlessness. In one of the photos, Koch took a self portrait with the earth. The blue curves and white clouds of the earth are clearly shown in the picture.
NASA astronaut Christina Koch and Earth "selfie." Source: NASA website.
Koch took the picture at a speed of 17000 miles per second (27359 kilometers per second), the report said.