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NASA has Simulated a Tiny Piece of the Moon Here on Earth

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Before going to the Moon, the Apollo astronauts trained at various sites on Earth that best approximated the lunar surface, such as the volcanic regions Iceland, Hawaii and the US Southwest.  To help prepare for upcoming robotic and human Artemis missions, a newly upgraded “mini-Moon” lunar testbed will allow astronauts and robots to test out realistic conditions on the Moon including rough terrain and unusual sunlight.

The Lunar Lab and Regolith Testbed at the Ames Research Center in California simulates conditions on the Moon in a high-fidelity environment, allowing researchers to test hardware designs intended for the lunar surface. The lab is currently being used as a test environment for the next phases of the Artemis Program, to conduct studies on optical sensing and drill testing, and tests for in-situ resource utilization identification and extraction techniques.

A look at the lighting system for Lunar Lab and Regolith Testbeds. Credit: NASA/Uland Wong.

The facility was originally built in 2009 but has now been expanded and upgraded to include a lunar lab with multiple testbeds with a variety of simulated lunar regolith. These large indoor “sandboxes” can be configured and customized to simulate various regions on the Moon. In addition, a special lighting system can re-create realistic lighting conditions on the Moon, such as the darkness of a lunar polar crater, or the glaring rays of the Sun that the Apollo astronauts had to deal with in the lunar mares.

The testbeds aren’t huge, but big enough to provide a variety of conditions. The first original sandbox measures approximately 13 feet by 13 feet by 1.5 feet (4 meters by 4 meters by 0.5 meter) and is filled with eight tons a lunar regolith simulant called Johnson Space Center One simulant (JSC-1A), which makes this the world’s largest collection of the material. The JSC-1A simulant mimics the Moon’s mare basins and is dark grey in color.

The new larger testbed, measures 62 feet by 13 feet by 1 foot (19 meters by 4 meters by 0.3 meter) and is  filled with more than 20 tons of Lunar Highlands Simulant-1 (LHS-1), which is light grey to simulate the lunar highlands. This larger sandbox can be reconfigured if needed to be a smaller, but deeper, testbed.

Some of the things tested are how various tools and rovers work in the incredibly abrasive and “sticky” regolith. Moon dust has grains as fine as powder, but it can also be sharp as tiny shards of glass. In addition, it has the annoying ability to electrostatically cling to everything.

The special lighting system can mimic both the dark polar regions of the Moon and the glaring, unfiltered light elsewhere on the Moon.

“When rovers and astronauts carry out missions at the lunar South Pole, they’ll have to navigate in low-angle lighting and overcome harsh solar glare that makes it difficult to see,” NASA said in a press release. “Because the Sun will never rise overhead, even the smallest rock or crater will cast long shadows and cloak craters in darkness. And, at times, the Sun will blaze at eye-level as it reflects off the soil.”

In the Regolith Testbeds at NASA’s Ames Research Center, which are designed to mimic lunar terrain as it would appear in different areas at the Moon’s poles, the VIPER team tests out lighting systems for the rover with a very low-angle illumination simulating the Sun. Credit: NASA/Dominic Hart

The new testbeds have been instrumental in testing out NASA’s new Moon rover, the Volatiles Investigating Polar Exploration Rover (VIPER). VIPER’s rover drivers will rely on a system of rover-mounted lights and cameras to steer clear of boulders, descend steep declines into craters, and avoid other potentially mission-ending dangers. The facilities at the Regolith Testbed  allowed research teams create over 12 different scenarios of craters and rock formations to improve the rover’s autonomous navigation system, so it can navigate safely through unknown terrain and harsh conditions.

An artist’s concept of the completed design of NASA’s Volatiles Investigating Polar Exploration Rover, or VIPER. VIPER will get a close-up view of the location and concentration of ice and other resources at the Moon’s South Pole, bringing us a significant step closer to NASA’s ultimate goal of a long-term presence on the Moon. Credits: NASA/Daniel Rutter

The post NASA has Simulated a Tiny Piece of the Moon Here on Earth appeared first on Universe Today.


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