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While water is relatively common across the universe it is normally found as ice or water vapour rather than as a liquid. The findings of the study, led by the University of Glasgow, were published in Nature Astronomy.Įarth is an unusual planet in the solar system and as far as scientists are aware, the universe at large. I'm hoping in the future more studies are going to be looking into removing terrestrial contamination from their results.' 'By using samples from an asteroid, we know exactly what they've been exposed to so we can remove those signals to give a better idea of what those conditions are like. Just by being exposed to oxygen and water vapor they change, and as a result evidence of the extra-terrestrial environment is lost. The problem with meteorites is that they have been sitting on Earth.
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'It is directly relevant to the origin of water in planetary systems and possibly the isotopic composition of Earth's oceans.'ĭr Helena Bates, who researches water-bearing asteroids at the Museum and was not involved in the study, says, 'I think what is really special about this study is that they're using real samples from an asteroid that haven't been terrestrially altered. 'By showing for the first time that water is produced in-situ on the surface of an asteroid, our study builds on the accumulating body of evidence that the interaction of the solar wind with oxygen-rich dust grains does indeed produce water. Professor John Bradley, a co-author of the paper, says, 'As recently as a decade ago, the notion that solar wind irradiation is relevant to the origin of water in the solar system, much less relevant to Earth's oceans, would have been greeted with scepticism. In the future this water could be used by space explorers to replenish their supplies. Some of this water is believed to have been brought to Earth by meteor strikes hundreds of millions of years ago, but a significant amount remains drifting around in space. This oxygen then combined with hydrogen ions in the same solar winds and created water. Though it may seem unlikely, the extremely hot atmosphere of the Sun could be responsible for filling the oceans with water.Īn international team of scientists found that solar winds originating from our star changed the chemical makeup of asteroids orbiting it and causing them to eject oxygen.