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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 foundbathtub ringred planetmarscould
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 oceannew evidencebathtub ringsurfacesdue
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 ringmay showancient oceanjapan timeshuge
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 oceannew evidencebathtub ringsurfacesdue