een from Earth, the Moon looks so bright and peaceful. But on closer inspection, the lunar surface is etched with crinkles that also happen to be active faults—whose appearance and behavior may be more unexpected than scientists thought. In a study published yesterday in The Planetary Science Journal, scientists report the identification of more than 10,000 young faults across the lunar surface. The team referenced images from NASA’s Lunar Reconnaissance Orbiter Camera (LROC), specifically its images of ridges and long, curvy structures called lobate scarps. These features form as a result of a celestial body’s contraction, in this case the...