Christina Hammock Koch is one of four astronauts on the Artemis II mission and the only woman on the crew. This mission will be the first human flight around the Moon in decades, and Christina brings an extraordinary amount of experience to space.

Christina is an astronaut who previously spent 328 consecutive days on the International Space Station (ISS), setting the record for the longest spaceflight by a woman. During that time:

It made more than 5200 orbits around the Earth.
He conducted scientific experiments in biology, physics, and technology.
It studied the effects of microgravity on the human body, essential knowledge for future missions to the Moon and Mars.
Christina didn't just stay inside the station. She did spacewalks, meaning she stayed outside the ISS to repair and install equipment.

Spacewalks are among the most dangerous activities in space, where any mistake could be fatal. (The main photo shows Christina Koch working outside the ISS, in zero gravity)
Christina has successfully completed them, showing extraordinary skill and composure in extreme environments.

On the Artemis II mission, Christina is a mission specialist, monitoring Orion's systems and assisting the crew during orbit around the Moon. This mission is a testbed for future flights that will land on the lunar surface, and her experiences on the ISS make her an irreplaceable asset to NASA.

Christina Koch demonstrates the resilience, preparation, and space vision that make her special. She is not only the woman on Artemis II, but also one of the most experienced astronauts in modern history, paving the way for further exploration.