May 12

Space Rocket History #364 – Apollo 16 – Moonwalk 2 – Evidence of Water

John and Charlie also collected several rusty-looking rocks with brown stains on their surfaces. These were exciting finds because the rusty appearance suggested the presence of hydrated oxides of iron. “Hydrated” meant water and the scientists had a serious interest in anything that could mean water had existed, or even still existed, on the Moon.