Recent research study has actually challenged previous beliefs about Mars water history, showing that Martian gullies could be formed by the sublimation of CO2 ice, not simply liquid water. Credit: SciTechDaily.comResearch pushes the existence of water on Mars even more into the past.The period that liquid water was present on the surface of Mars might have been much shorter than previously thought. Warmer spring temperatures, combined with the thin Martian atmosphere, causes CO2 ice to evaporate straight back to gas, again skipping the liquid phase.Satellite image of gully landscapes on Mars, taken by HiRISE (High Resolution Imaging Experiment), a cam on board the Mars Reconnaissance Orbiter.
Recent research has actually challenged previous beliefs about Mars water history, showing that Martian gullies could be formed by the sublimation of CO2 ice, not simply liquid water. Credit: SciTechDaily.comResearch presses the presence of water on Mars even more into the past.The duration that liquid water was present on the surface of Mars may have been shorter than formerly believed. Warmer spring temperature levels, integrated with the thin Martian atmosphere, triggers CO2 ice to vaporize straight back to gas, again skipping the liquid phase.Satellite image of gully landscapes on Mars, taken by HiRISE (High Resolution Imaging Experiment), an electronic camera on board the Mars Reconnaissance Orbiter. We even observed that debris streams driven by CO2 ice under Martian conditions stream simply as efficiently as the particles streams driven by water on Earth. Credit: Utrecht UniversityExtraterrestrial Life” We know for sure that there was once water on the surface of Mars.
