Ancient Asteroid Magnetic Field Clues
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new Ryugu particlesPhys Org
•Asteroid grains shed light on the outer solar system's origins
78% Informative
Scientists at MIT and elsewhere have analyzed particles of asteroid Ryugu , which were collected by the Japanese Aerospace Exploration Agency's ( JAXA ) Hayabusa2 mission.
Scientists believe Ryugu formed on the outskirts of the early solar system before migrating in toward the asteroid belt, eventually settling into an orbit between Earth and Mars .
Their results suggest that if there was a magnetic field, it would have been very weak.
Scientists had estimated Ryugu samples were not old enough to have formed before the solar nebula disappeared.
But Mansbach and his colleagues reexamined data from previously studied meteorites.
They found they are closer to the start of the solar system than previously thought.
One of these samples does actually have a positive field detection.
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