NASA Astronaut Christina Koch Return ISS
NASA astronaut Christina Koch landed back on Earth at 4:12 a.m. EST in Kazakhstan, southeast of the remote town of Dzhezkazgan, setting a record for the longest single spaceflight in history by a woman. Her first journey into space became a 328-day mission in which she orbited Earth 5,248 times, a journey of 139 million miles, or the equivalent to 291 trips to the Moon and back. Read more for a video and additional information.



More than 210 investigations were conducted during Expeditions 59, 60, and 61, including as a research subject volunteer to provide scientists the opportunity to observe effects of long-duration spaceflight on a woman as the agency plans to return to the Moon under the Artemis program and prepare for human exploration of Mars.

LEGO Ideas 21312 Women of NASA (231 Pieces)
  • Features 3 LEGO builds illustrating the areas of expertise of the 4 featured women of NASA
  • Includes 4 minifigures: Nancy Grace Roman, Margaret Hamilton, Sally Ride and Mae Jemison
  • Nancy Grace Roman’s build features a posable Hubble Space Telescope with authentic details and a projected image of a planetary nebula
  • Margaret Hamilton’s build features a stack of book elements, representing the books of listings of Apollo Guidance Computer (AGC) onboard flight software source code
  • Sally Ride and Mae Jemison’s build features a launchpad and Space Shuttle Challenger with 3 removable rocket stages


A notable research project in which Koch participated is the Vertebral Strength investigation, which better defines the extent of spaceflight-induced bone and muscle degradation of the spine, as well as the associated risk for broken vertebrae. This arduous investigation is expected to provide insight into the development of future countermeasures, like preventative medicine or exercise. These results may also provide recommendations for limiting the amount of force astronauts are subjected to during launch.