Is the mystery of the origin of water on Earth finally solved?

The question of the origin of water on Earth has been debated for a long time. Researchers are now uncovering new clues that point to a somewhat surprising potential source: the Sun!

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[EN VIDÉO] Life on Earth: The Role of the Young Sun
The Sun is one of the major players in the appearance of life on Earth. And perhaps it was the incredibly energetic solar flares that shook him for the first millions of years of his life that provided our planet with the energy needed for our emergence.

our earth is not alone rocky planet NS Solar System, But it still has one feature that the others don’t have: it’s covered in water Over 70%! And researchers have long questioned its origins. Today Team led by the University of Glasgow (Scotland) argues that solar wind, composed exclusively of ions hydrogen, on the surface of tiny dust particles, could have formed a water, which then accumulated on Earth asteroids Which would have crossed the trajectory of our planet early in the history of our solar system.

Remember that a hypothesis that explains the presence of water on Earth involves collision with asteroids Type C – carbonaceous asteroids, like 75% of asteroids in the late stages of our planet’s formation. But the isotopic footprints of these objects do not quite match. Another source seems necessary.

water for space missions

So the researchers turned to an S-type asteroid – asteroids made mostly of silicate. and they did a thorough analysis of a few grams of dustitokawa asteroid Brought back to Earth in 2010. Thanks to the atomic tomographic probe, which makes it possible to observe oath spatial distribution of atoms In one sample, scientists actually had the first 50 . had access to nanometer from the surface of these dust grains. Per cubic meter of them will be equal to 20 liters of water. Water is isotopically lighter than what can come on Earth From Type C asteroid. The mark looks good.

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The researchers also hope that their work will be useful future space missions, Because they show that the same weathering process that created water on Itokawa probably happened on planets without atmospheres. Like this Astronaut may be able to collect fresh water directly from the dust on the surface of Moon, for example.

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