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The Water on the Moon May Trace Back to Early Earth - and Comets
Learn more about the water molecules on the moon, which may trace their origins to the materials that made Earth and comets.
Ever-Growing USA on MSN48m
Curiosity Rover Unveils Pure Sulfur Crystals on Mars in Groundbreaking Discovery
NASA's Curiosity rover has made a groundbreaking discovery on Mars by uncovering pure sulfur crystals within a broken rock.