Spacewalks 'Thrilling,' Astronaut Tells Students During Ham Radio Chat:

International Space Station Expedition 12 Commander Bill McArthur, KC5ACR, told students gathered in Geneva, Switzerland, November 22, that taking a spacewalk is a thrilling experience.

Speaking the following day with middle schoolers in upstate New York, McArthur described space exploration as the new frontier. Both contacts were arranged by the Amateur Radio on the International Space Station (ARISS) program.

During the Geneva contact--part of the "Science on Stage" program for European science teachers--McArthur rhapsodized about the spacewalk experience.

"It's an absolute delight, it's thrilling to be outside, it's being truly in a totally alien environment," McArthur said, "and you realize the only thing between you and vacuum is the small little spaceship that you call your spacesuit. And it is truly the most thrilling thing I've ever done."

Responding to a question involving human physiology in space, McArthur said it's theorized that bone tissue is replaced more slowly in space because it does not get stressed in microgravity.

Amateur Radio on the ISS


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