The magnetic field of the earth is caused by the growth of the solid inner core. However, it has only been around 1 billion years. So why the early magnetic field dating back to at least 3.45 billion years? Theoretical predictions exist, but for the first time, researchers have conducted experiments that confirm. This work, conducted by an international team […]
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Where did the two natural satellites of Mars, Phobos and Deimos, come from? For a long time, their shape suggested that they were asteroids captured by Mars. However, the shape and course of their orbits contradict this hypothesis. Two independent and complementary studies provide an answer to this question. One of these studies, to be published in The Astrophysical Journal […]
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During this year, UnivEarthS continued to hire new people and affirmed its recruitment dynamics, integrating new skills within Labex. The management of UnivEarthS wishes to gather new recruits during a meeting of exchanges, followed by a convivial lunch. This event takes place approximately once a year to allow newcomers to get to know the members of the project and to […]
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“The Early Earth: Accretion and Differentiation” was writeen under the direction of James Badro, member of the team I6 “From dust to planets”, and of Michael J. Walter. The Early Earth: Accretion and Differentiation provides a multidisciplinary overview of the state of the art in understanding the formation and primordial evolution of the Earth. The fundamental structure of the Earth […]
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The influx of extraterrestrial material onto Earth is well known through the fall of meteorites, such as the one which may have caused the dinosaurs’ extinction 65 Myr ago. However, the main amount of extraterrestrial material reaching the Earth (~40,000 tons/yr) comes from sub-millimetric particles, called interplanetary dust particles and forming the cosmic dust, which generally originate from asteroid collisions […]
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