Two NASA astronauts went underwater last week to test out some spacewalking techniques that could be used to explore a captured asteroid a decade or so from now.
Astronauts Stan Love and Steve Bowen — who have 62 hours of spacewalking experience between them — descended into NASA's Neutral Buoyancy Laboratory pool on Friday (May 9) wearing "escape suits" from the space shuttle that could be modified for possible use on extravehicular activities (EVAs).
The 40-foot-deep (12 meters) pool includes a mockup of NASA's Orion deep-space capsule, which would bring astronauts to the target asteroid. The simulated Orion vehicle is docked to a robotic spacecraft mockup, which represents the unmanned probe that would snag the asteroid and tow it close to Earth. [NASA's Asteroid-Capture Missiion in Pictures]
"We're working on the techniques and tools we might use someday to explore a small asteroid that was captured from an orbit around the sun and brought back by a robotic spacecraft to orbit around the moon," Love said in a statement.
"When it's there, we can send people there to take samples and take a look at it up close," he added. "That’s our main task; we’re looking at tools we’d use for that, how we'd take those samples."
One key goal was to evaluate a pneumatic hammer that could be used to extract a "core sample" from the asteroid. These cores show the layers of material that accumulate over time, and would be a sort of time capsule of the early solar system.
The tool represents an improvement over the typical way geologists collect such samples, NASA said, because swinging a hammer could produce rock shards that would rupture a spacesuit's face plate.
The astronauts also tested the Advanced Crew Escape Suit, a pressure suit worn during entry and descent on shuttle missions after the Challenger explosion. NASA aims to make the suit functional for spacewalks as well, so that astronauts don't have to carry two pressure suits into orbit on the Orion spacecraft.
"We need some significant modifications to make it easy to translate," Bowen said in NASA video interview while wearing the spacesuit underwater. "I can't stretch my arms out quite as far as in the [space station spacesuit]. The work envelop is very small. So as we get through, we look at these tasks. These tasks are outstanding to help us develop what needs to be modified in the suit as well."
NASA aims to send astronauts to a captured space rock by 2025 using Orion and its huge Space Launch System mega-rocket, which are slated to fly together for the first time in 2021. However, this White House-backed plan has so far met with resistance from some legislators in Congress, who have voiced skepticism about how it would help the agency prepare for other missions beyond Earth orbit, particularly to Mars.
NASA counters that the mission would advance "a number of technologies needed for longer-term plans," including a Mars mission.
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Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for Space.com for 10 years before joining full-time. Elizabeth's reporting includes multiple exclusives with the White House and Office of the Vice-President of the United States, an exclusive conversation with aspiring space tourist (and NSYNC bassist) Lance Bass, speaking several times with the International Space Station, witnessing five human spaceflight launches on two continents, flying parabolic, working inside a spacesuit, and participating in a simulated Mars mission. Her latest book, "Why Am I Taller?", is co-written with astronaut Dave Williams. Elizabeth holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, a Bachelor of Journalism from Canada's Carleton University and a Bachelor of History from Canada's Athabasca University. Elizabeth is also a post-secondary instructor in communications and science at several institutions since 2015; her experience includes developing and teaching an astronomy course at Canada's Algonquin College (with Indigenous content as well) to more than 1,000 students since 2020. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday. Mastodon: https://qoto.org/@howellspace