
NASA @NASA
Before the desert that stands today, liquid water flowed on the surface of Mars longer a lot more recently than previously thought — by about a billion years! Data from @NASAJPL’s Mars Reconnaissance Orbiter tells us more. Dip into the details: https://t.co/HT4l5UYBN4 https://t.co/FyTgb6iS5h — PolitiTweet.org