Rosetta Data Suggest Earth’s Oceans Likely Came from Asteroids

The Rosetta Orbiter Sensor for Ion and Neutral Analysis (ROSINA) instrument aboard ESA’s Rosetta spacecraft has found that the composition of the water vapor from its target comet – the Jupiter family comet 67P/Churyumov-Gerasimenko – is significantly different to that found on our planet. ROSINA’s double focusing mass spectrometer made the measurements in the month [...] —> Read More Here


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