1. How carbon dioxide glaciers gave Mars liquid water - Astronomy Magazine

    https://www.astronomy.com/science/how-carbon-dioxide-glaciers-gave-mars-liquid-water/

    This artist's impression shows a liquid water ocean on Mars, as the planet might have appeared some 4 billion years ago. ... the water must escape, and so it does — in rivers that stretched ...

  2. On ancient Mars, carbon dioxide ice kept the water running. Here's how

    https://www.space.com/the-universe/mars/on-ancient-mars-carbon-dioxide-ice-kept-the-water-running-heres-how

    By 3.6 billion years ago, Mars should have become too cold for liquid water, but something kept the rivers flowing.

  3. Did China's Rover Zhurong Find Evidence of Water on Mars ... - Newsweek

    https://www.newsweek.com/mars-zhurong-rover-china-ancient-ocean-water-solar-system-1982855

    A Chinese Mars rover may have found evidence of an ancient ocean on the arid Red Planet. According to a new paper in the journal Scientific Reports, China's Zhurong rover has discovered traces of ...

  4. NASA: New Insights Into How Mars Became Uninhabitable

    https://www.jpl.nasa.gov/news/nasa-new-insights-into-how-mars-became-uninhabitable/

    Mars today bear signs of once having had abundant water, with features resembling valleys and deltas, and minerals that only form in the presence of liquid water. This artist’s concept shows how the Red Planet could have appeared billions of years ago. ... These climate scenarios for ancient Mars have been proposed before, based on the ...

  5. Flowing Martian Water was Protected by Sheets of Carbon Dioxide

    https://www.universetoday.com/169184/flowing-martian-water-was-protected-by-sheets-of-carbon-dioxide/

    It drops about 5.2 km (3.2 mi) below the surrounding plains, making it the second deepest basin on Mars. Scientists have long thought that the basin once held water—as much as the Mediterranean ...

  6. What the ocean looked like on Mars 3.6 billion years ago

    https://universemagazine.com/en/carbon-dioxide-keeps-mars-watery-for-230-million-years/

    Ivan Hrinko. 3.6 billion years ago, Mars underwent an abrupt transformation from a dry climate to a wet climate with intense water activity: water currents dramatically carved rivers and lakes across the Red Planet’s surface. Scientists have long been trying to understand the cause. A new study by Peter Buhler of the Institute of Planetary ...

  7. How carbon dioxide ice helped water flow on ancient Mars - Cosmos

    https://cosmosmagazine.com/space/astronomy/ice-water-flow-ancient-mars/

    This carbon dioxide ice formed a layer on top of water ice sheet at the poles. Heat emanating from Mars’s still active interior was insulated by the carbon dioxide ice, warming up the water ice ...

  8. How an Ocean-Sized Lake May Have Formed on Ancient Mars

    https://eos.org/research-spotlights/how-an-ocean-sized-lake-may-have-formed-on-ancient-mars

    In total, about 4% to 40% of the water ice could have melted, an amount of water equivalent to between 20% and 200% of the water currently found near the surface on Mars.

  9. Scientists discover evidence of recent water flows on Mars

    https://www.open.ac.uk/blogs/news/science-mct/space/scientists-discover-evidence-recent-water-flows-mars/

    Planetary scientists from the OU, in collaboration with University College Dublin, the University of Cambridge and the University of Nantes (CNRS), have discovered a rare ‘esker’ on Mars – a ridge of sediment deposited by meltwater flowing beneath a glacier in the relatively recent past (about 110 million years ago), despite cold climates.The research has been published in the Journal of ...