Posted by BeauHD from the would-you-look-at-that dept.
Longtime Slashdot reader fahrbot-bot shares a report from Gizmodo: A team of researchers think they’ve discovered a cave on the Moon in radar images of the lunar surface, which they posit could be a future site for an established human presence on our rocky satellite. The tunnel is in the Mare Tranquillitatis (Sea of Tranquility) pit, the deepest known pit on the Moon. (If the name is familiar to you, the Sea of Tranquility is where the Apollo 11 mission landed in 1969.) The pit formed due to a lava tube’s roof collapse or a collapse of a void structure created by tectonic processes. To look for potential cave structures within the pit, the researchers studied side-looking radar images taken by the Lunar Reconnaissance Orbiter’s Mini-RF instrument between 2009 and 2011. The team then conducted 3D radar simulations of potential geometries of the pit and its cave, to determine that the brightness they saw in radar images could be due to subsurface features. Ultimately, the team determined there is a tunnel in the pit that is between 98 feet (30 meters) long and 262ft (80m) long. The tunnel is roughly 148ft (45m) wide and is either flat or inclined with a maximum steepness of 45 degrees. “The exploration of lunar caves through future robotic missions could provide a fresh perspective on the lunar subsurface and yield new insights into the evolution of lunar volcanism,” the team wrote in the paper. “Furthermore, direct exploration could confirm the presence of stable subsurface environments shielded from radiation and with optimal temperature conditions for future human utilization.”
The findings have been published in the journal Nature Astronomy.
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