NASA Finally Unlocks Stuck Fasteners on Asteroid Sample Capsule

"For months, bits of an asteroid collected by a U.S. probe during a billion-mile trek were out of reach to scientists," reports Space.com, "locked inside a return capsule in a NASA facility with two stuck fasteners preventing access to the rocky space treasure. "This week, NASA won its battle against those fasteners." More details from CNN:The space agency already harvested about 2.5 ounces (70 grams) of rocks and dust from its OSIRIS-REx mission, which traveled nearly 4 billion miles to collect the unprecedented sample from the near-Earth asteroid called Bennu. But NASA revealed in October that some material remained out of reach in a capsule hidden inside an instrument called the Touch-and-Go Sample Acquisition Mechanism - a robotic arm with a storage container at one end that collected the sample from Bennu. The sampler head is held shut by 35 fasteners, according to NASA, but two of them proved too difficult to open. Prying the mechanism loose is no simple task. The space agency must use preapproved materials and tools around the capsule to minimize the risk of damaging or contaminating the samples. These "new tools also needed to function within the tightly-confined space of the glovebox, limiting their height, weight, and potential arc movement," said Dr. Nicole Lunning, OSIRIS-REx curation lead at NASA's Johnson Space Center in Houston, in a statement. "The curation team showed impressive resilience and did incredible work to get these stubborn fasteners off the TAGSAM head so we can continue disassembly. We are overjoyed with the success." To address the issue, NASA said they designed and fabricated two new, multi-part tools out of surgical steel. NASA says that a "few additional disassembly steps" still remain, but there's a video on their web site showing the operation (along with some pictures). NASA adds that "Later this spring, the curation team will release a catalog of the OSIRIS-REx samples, which will be available to the global scientific community."But CNN notes that an analysis of material from last fall "already revealed the samples from the asteroid contained abundant water in the form of hydrated clay minerals as well as carbon," CNN reports. And they add that scientists believe this bolsters the theory that water arrived on Earth billions of years ago on an asteroid...

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