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https://www.cnn.com/2026/04/20/science/mars-ocean-coastal-shelf ‘Bathtub ring’ offers new evidence for ancient Mars ocean | CNN Apr 20, 2026 - Scientists believe they found fresh proof of an ancient ocean on Mars in the form of a “bathtub ring” it left after it dried up billions of years ago. offers new mars ocean evidence ancient cnn https://www.ctvnews.ca/sci-tech/article/bathtub-ring-offers-new-evidence-for-mars-ocean-billions-of-years-ago/ Mars ocean: New evidence surfaces due to 'bathtub ring' Apr 20, 2026 - Mars may have once had an ocean so vast that it covered one-third of the planet before evaporating billions of years ago and leaving behind a telltale sign: a... mars ocean new evidence bathtub ring surfaces due https://www.cp24.com/news/world/2026/04/20/bathtub-ring-offers-new-evidence-for-mars-ocean-billions-of-years-ago/ Mars ocean: New evidence surfaces due to 'bathtub ring' Apr 20, 2026 - Mars may have once had an ocean so vast that it covered one-third of the planet before evaporating billions of years ago and leaving behind a telltale sign: a... mars ocean new evidence bathtub ring surfaces due https://www.space.com/astronomy/mars/scientists-found-a-bathtub-ring-on-mars-could-it-be-evidence-of-an-ancient-red-planet-ocean Scientists found a 'bathtub ring' on Mars. Could it be evidence of an ancient Red Planet ocean? |... Apr 20, 2026 - A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the Red Planet. scientists found bathtub ring red planet mars could https://futurism.com/evidence-huge-ocean-mars-surface Readings Show Evidence of Huge Ocean Under Mars' Surface Mar 18, 2025 - Researchers have found new evidence for a massive subsurface ocean on Mars, again raising the possibility of microbial life. show evidence mars surface readings huge ocean https://www.jpost.com:443/science/space/article-893174 Scientists may have discovered ancient ocean lines on Mars | The Jerusalem Post Apr 16, 2026 - Like Earth and the solar system's other planets, Mars formed roughly 4.5 billion years ago. Early in its history, Mars was warmer and wetter than the cold and... scientists may ancient ocean jerusalem post discovered lines https://www.livescience.com/space/mars/an-ocean-the-size-of-the-arctic-once-covered-half-of-mars-new-images-hint An ocean the size of the Arctic once covered half of Mars, new images hint | Live Science Jan 23, 2026 - Mars may have been a new images live science ocean size arctic https://www.japantimes.co.jp/news/2026/04/16/world/science-health/mars-clues-ancient-ocean/ Huge 'bathtub ring' may show contours of ancient ocean on Mars - The Japan Times Apr 16, 2026 - A new study builds on earlier evidence of a bygone Martian ocean including studies identifying features resembling an ancient shoreline. bathtub ring may show ancient ocean japan times huge https://futurism.com/space/glimpse-huge-ocean-mars Scientists Astonished by Glimpse of Huge, Ancient Ocean on Mars Jan 24, 2026 - Researchers used satellite data to calculate and simulate the sea level in a canyon, getting a glimpse of a huge ocean. ancient ocean scientists astonished glimpse huge