Ancient mud cracks on Mars suggest Red Planet may have been more habitable than thought
Ancient mud cracks found by NASA's Curiosity rover suggest that Mars underwent a repeated cycle of wet and dry spells that could have supported the emergence of life.
![Ancient mud cracks on Mars suggest Red Planet may have been more habitable than thought](https://cdn.mos.cms.futurecdn.net/oERPBFhi92r25g3yquMaEV.jpg?#)