WoW Blog (Woman of the Week) Blog

WoW Blog (Woman of the Week)

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Woman of the Week – Karen Nyberg

Posted October 15, 2018 4:30 PM by lmno24

Karen Nyberg is a NASA astronaut who has served on two space fights totaling 180 days in space.

She was selected by NASA in July 2000; her first trip to space was in 2008 aboard the STS-124 Discovery, the 123rd space shuttle flight launched from Kennedy Space Center.

Her experience helped guide her for a second mission. In 2013, she went up as part of Expedition 36/37 aboard the International Space Station (ISS) for a five-and-a-half-month mission.

Source: NASA

Nyberg launched from Kazakhstan on May 28, 2013. During the 166 day voyage, the crew completed five space walks and 2,656 orbits around the Earth. She served as a fight engineer on this mission. She was one of only two women in space at this time, the other being Chinese astronaut Wang Yaping aboard the Tiangong-1 on the Shenzhou 10 mission.

Nyberg was born in Minnesota in 1969. She graduated summa cum laude with a degree in mechanical engineering from the University of North Dakota in 1994.

Her studies continued at the University of Texas at Austin. There, she focused on human thermoregulation and experimental metabolic testing and control (specifically on the control of thermal neutrality in space suits).

When she was chosen by NASA as an astronaut, she spent two years as a Mission Specialist and worked as crew support for people going up to space.

In July 2006, she participated in NEEMO 10, a deep-sea training and simulation exercise at the Aquarius underwater laboratory to help NASA prepare for the return of astronauts to the moon, also manning missions to Mars. The crew lived and worked underwater for seven days.

She has worked various positions as NASA since touching back down to Earth in 2013, including time in the Space Shuttle branch, the Exploration branch, and as Chief of the Robotics branch.

She also runs active and fun Twitter and Instagram pages, highlighting the daily life of a NASA employee. She is married with one child and enjoys recreational activities like running, sewing and painting.

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Re: Woman of the Week – Karen Nyberg

10/16/2018 6:21 AM

I think anyone who goes through the training to reach the point of actually going into space is to be admired; to spend 180 days there is a feat to be admired. Congratulations on becoming Woman of the Week!

On a different subject (but linked to space): can anyone tell me why the space station wasn't built like a wheel that turns to form artificial gravity with spokes to a central hub that would be weightless so shuttles could dock? Just a thought.

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Re: Woman of the Week – Karen Nyberg

10/16/2018 10:58 AM

Maintenance of axis stability is a concern. As people and loads move around the rim, the axis shifts, precession kicks in and you end up with the axis ends moving in a circle and eventually tumbling. You end up needing to continually expend fuel to correct for the precession. The station would need to be much more massive and would need dynamic corrective mass shifting to make something that would approximate stability without expending much more fuel. The station would also need to be much more massive to handle the structural loads imposed by centripetal forces.

Another issue is that once you attain a stable spin axis, it is fixed and every orbit you would go through an apparent end over end rotation where one end points at the earth and then the other end would point at the earth. and on an annual basis the sun would go through the same end over end aspect, meaning that solar thermal shielding and solar cell array pointing would need to be constantly redirected during the year.

These are all things that can be designed in, but they are complications not needed if you maintain no rotation and can redirect with a few small thruster corrections.

I have wondered why there isn't a "sister" module essentially flying in formation with the ISS but not attached. It could be dumbbell shaped, for weightless respite where someone could get a dose of "gravity" during their breaks. I suppose it will happen someday.

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