Expedition 73 activities continued this week with bone loss and cardio studies, as well as a first-of-its-type reboost operation for the orbital complex.

Orbital observation

Students from the Computer School in New York had a chance to record questions for Expedition 73 crewmates Jonny Kim of NASA and Kimiya Yui of JAXA (Japan Aerospace Exploration Agency) to answer during a live broadcast from the International Space Station (ISS) on Friday (Sept. 5). Among the topics that the middle school students asked about was why we explore.

"Personally I think humankind is always in need of a frontier in order to live happily, so that's why you keep doing exploration," said Yui.

"I think exploring that frontier is so important to inspiring the next generation," added Kim.

Another student asked

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