U.S. astronauts Christina Koch and Jessica Meir recently made history. Last October, they were the first women to take part in an all-female space walk. That’s when astronauts leave their spaceship to fix or replace something on it. They were floating in space for more than seven hours!
But that’s not all. Koch, who returned to Earth last month, set the record for the longest spaceflight by a woman — 328 days. Scientists are studying her to try to understand how long periods in space affect female bodies.
“The real achievement,” the astronauts wrote in an article about their experience, “is the collective acknowledgment that it is no longer OK to move forward without everyone moving together.”