A meteorite found in the Moroccan desert in 2011 appears to have originated in Mars' crust - and contains much more water than any Martian meteorite ever found before.
New images snapped by NASA's Lunar Reconnaissance Orbiter (LRO) indicate the moon's crust is actually being stretched - forming minute valleys in a few small areas on the lunar surface.
The Earth's wandering continents can't be fully explained by a layer of partially molten rock about 22 to 75 miles underground, NASA scientists say - something else must be contributing.
