NASA Is Opening a Vacuum-Sealed Sample It Took From the Moon 50 Years Ago

Scientists at NASA's Johnson Space Center in Houston are preparing to open the first tube that one of the astronauts on the Apollo missions hammered into the surface of the moon. As NPR reports, it's "remained tightly sealed all these years since that 1972 Apollo 17 mission -- the last time humans set foot on the moon." From the report: The unsealed tube from that mission was opened in 2019. The layers of lunar soil had been preserved, and the sample offered insight into subjects like landslides in airless places. Because the sample being opened now has been sealed, it may contain something in addition to rocks and soil: gas. The tube could contain substances known as volatiles, which evaporate at normal temperatures, such as water ice and carbon dioxide. The materials at the bottom of the tube were extremely cold at the time they were collected. The amount of these gases in the sample is expected to be very low, so scientists are using a special device called a manifold, designed by a team at Washington University in St. Louis, to extract and collect the gas. Another tool was developed at the European Space Agency (ESA) to pierce the sample and capture the gases as they escape. Scientists there have called that tool the "Apollo can opener." The careful process of opening and capturing has begun, and so far, so good: the seal on the inner sample tube seems to be intact. Now, the piercing process is underway, with that special "can opener" ready to trap whatever gases might come out. If there are gases in the sample, scientists will be able to use modern mass spectrometry technology to identify them. (Mass spectrometry is a tool for analyzing and measuring molecules.) The gas could also be divided into tiny samples for other researchers to study.

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