APL staffer selected for NASA astronaut training

Image caption: Christina Hammock at work at APL, using a particle accelerator to test the Jupiter Energetic-particle Detector Instrument (JEDI, now flying aboard the NASA Juno mission to Jupiter, which launched in 2011).

Image credit: C. HAMMOCK/JHUAPL

For years, Christina M. Hammock created complex scientific instruments bound for space. Now, as one of eight new NASA astronaut candidates, she has her own chance to explore the stars.

Hammock, who has worked at APL since 2007, was selected on June 18 as one of eight finalists for NASA astronaut training.

"It feels incredible, and it makes me feel like all my hard work was worth it," Hammock said to the media on her selection. "I also realized it's not always hard work if you're doing what you love and following your dreams."

A native of Jacksonville, N.C., Hammock was one of 6,300 applicants for the program; now, this month, she and seven other candidates will head to NASAís Johnson Space Center in Houston to begin two years of training that could culminate in a mission to the International Space Station, among other potential targets. It is NASA's first new astronaut candidate class in four years.

Long-distance travel—whether across the globe or into orbit—is an area in which Hammock specializes. At the time of her selection, she was station chief of a National Oceanic and Atmospheric Administration climate and atmospheric observatory in American Samoa; she has also covered much of the globe (including Greenland and the South Pole) for work, research, and adventure travel.

Hammock says that when her training begins, sheíll be counting in part on her experiences and knowledge from her time at the Laboratory. "It's hard to think of something that I learned at APL that won't be invaluable during training," she wrote via email from American Samoa. "More seriously, the experience of working on a close team and cross-department coordination is something I expect to draw on a lot. The technical aspects of the instrument engineering will come in handy when learning about the space station systems and experiments."

"The entire APL community, and particularly the Space Department, is tremendously proud of Christina's accomplishment," says Kurt Lindstrom, Civil Space Business Area executive at the Laboratory. "We are going to miss her skills and talents, but we know she has the chance to achieve a lifelong dream, and we wish her the best of luckfland look forward to seeing her soar above Earth."

While at APL, Hammock worked for the Space Science Instrumentation Group on several projects. Most of her efforts focused on three particle detector (called the ´hockey puckâ) instruments: the Jupiter Energetic-particle Detector Instrument, or JEDI (on Juno, launched 2011); the Van Allen Probesí Ion Composition Instrument, or RBSPICE (Van Allen Probes, also built by APL, launched 2012); and similar devices for the upcoming Magnetospheric Multiscale Mission, or MMS (launching 2014).

For RBSPICE, "my main role was as the lead engineer of the sensor subsystem that measured the total energy of the particles," Hammock says.

"She was scheduled to rejoin our group in another few months to work for 18 months or so, but it looks like that is not going to happen now," jokes the Space Department's Steve Jaskulek, with whom she worked on the detectors. "We are all thrilled that she is going to be able to live her dream, and we are all very proud of her."

Hammock says that, more than anything else, "APL taught me how to work harder than I ever thought I could. I used to say that I discovered a whole new 'high gear' that I didn't even know I had. APL helped me learn to stay focused and efficient while keeping a sense of humor and having fun—and, of course, [knowing] what to order for delivery when your team is having a late night of problem solving is key."

The positive experiences she had at APL will help her as she tackles her toughest challenge to date, she says. "My main memory is how close a team of folks who are working toward the same goal can get," she says, "and how lucky I feel to have been a part of that team. When things weren't going well and we were all in the lab late, brainstorming or putting in long hours preparing for a big review, it makes the eventual successes all the more profound and exciting."

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