In this activity, students will explore the science behind an intriguing feature on the dwarf planet Ceres and a discovery on Mars. Students will dissolve various salts into water, make predictions about what will happen when the solutions are left to dry, then make observations and provide explanations about what they observed. Materials Warm water Salt (table salt (sodium chloride), Epsom salt (magnesium sulfate), AND/OR baking soda (sodium bicarbonate)) Measuring spoons Small containers for