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Comet 67P's Water: New Research Links Cometary Origins to Earth's Oceans Recent research reveals that the water on Comet 67P/Churyumov – Gerasimenko shares a molecular composition similar to Earth's ocean water. This discovery challenges recent findings and reignites the hy pothesis that Ju piter-family comets, such as 67P, may have  played a role in delivering water to Earth. The Origins of Earth's Water Water has always been fundamental to the emergence and sustenance of life on Earth. Although some water may have been  present in the gas and dust that formed Earth around 4.6 billions years ago, much of it likely va porized due to the  planet's  proximity to the sun. The origins of Earth's abundant liquid water remain a to pic of scientific investigation. Volcanic Activity and Asteroid Im pact as Sources of Water Research indicates that volcanic eru ptions released va por that condensed into rain, filling Earth's early oceans. Yet, scientists have also un...