A historic experiment eroded metal for the first time in space.
With tens of thousands of pieces floating around in orbit, and more satellites launched into low Earth orbit by the day, the U.S. government and private companies alike are seeking more solutions to protect the zone from cluttering up too much for space exploration. NASA, Congress and the Federal Communications Commission have all released new frameworks addressing space debris in recent weeks.
The technique demonstrated on the Transporter-5 mission earlier this year is called friction milling, "which uses a cutting tool operating at high rotations per minute to soften the metal," experiment host Nanoracks wrote (opens in new tab) in a recent statement. (The robotic arm and samples were completely sealed up in this experiment as a further precaution against generating new space debris.)
Nanoracks (which hosts U.S. experiments aboard the International Space Station) is aiming to develop a series of Outpost stations that would host payloads aboard expired rocket stages, in the near future, but this first demonstration took place aboard a rideshare rocket.
There's still more to learn for future Outpost missions, emphasized the participating entities (which included Nanoracks, Voyager and Maxar, which provided the robotic arm.)
The mission met its goal in cutting up a single "coupon" or sample of corrosion-resistant steel similar to what is found on the outside of a United Launch Alliance Vulcan Centaur rocket, but the robot didn't make it to two extra coupons available as a "reach goal."
"We will dig into why the two extra coupons were not cut," Marshall Smith, Nanoracks senior vice president of space systems, said in the statement.
The mission was called Outpost Mars Demo-1 and aims to be the first in a series of demonstrations towards metal cutting in space. With the demonstrator now safely burned up in Earth's atmosphere, officials say they will analyze the available telemetry before announcing efforts for a second mission.