Asteroids that traveled from the fringes of the solar system more than 4.5 billion kilometers away may have brought water and organic matter to the primordial Earth, a team of Japanese researchers said Monday.The hypothesis, published in the scientific journal Nature Astronomy by the Japan Aerospace Exploration Agency and others, was drawn from an analysis of samples from the Ryugu asteroid collected by the Hayabusa2 space probe.It remains a mystery how the Earth, which consisted almost entirely of molten magma in its initial formation, came to be covered in water."In a broad sense, it is p…READ FULL ARTICLE