NASA rover spots proof that Mars hosted more than just lakes

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.As shown in the imagery below, the NASA robot investigated dried-up lake beds and captured views of ripple formations on their ancient shorelines. Like on Earth, these ripples were almost certainly formed by small waves on open-air (not ice-covered) lakes, planetary scientists say. It provides evidence that Mars was warm, wet, and habitable at a time some research suggests the planet started cooling and