Identifying Questions and Hypotheses

NASA's Mars Reconnaissance Orbiter, or MRO, has detected signatures of hydrated minerals on today's Mars. The question was to figure out if Mars had water or not, and scientists have suspected that there was water on Mars, because of Mars probes finding hints of water. But now, the MRO has discovered dark streaks on slopes, which indicates a seasonal flow of water. The streaks were found on slopes, like Hale Crater. During the warmer seasons, the steaks would darken and seem to flow, and would disappear during colder seasons. Scientists decided that if the streaks got darker during warmer seasons, which indicates it became liquid, and cooler in the colder seasons, which indicates it became frozen, then there is water on Mars.


Article