Martian rock composed of ancient dune deposits and wind ripples (NASA/JPL-Caltech/MSSS) Imperial College London and NASA researchers have found signs that water was plentiful in Mars’ Gale crater for longer than previously thought. Billions of years ago, Mars was home to abundant water, and its Gale crater contained a lake. Gradually, the climate changed, drying the Red Planet and creating the dusty desert world we know today.? Now, an international team of research...