Year in review: Best evidence yet for water on Mars
Red Planet’s slopes ooze brine, data from Mars Reconnaissance Orbiter showed
![mars salt flow](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/122615_13_feat.jpg?fit=860%2C460&ssl=1)
SALT STORY Seasonal water flows might have created dark streaks on Mars’ slopes, as seen in this computer-generated view of Hale Crater.
JPL-Caltech/NASA, Univ. of Arizona