Some 4.6 billion years ago, Earth was nothing like the gentle blue planet we know today. Frequent and violent celestial impacts churned its surface and interior into a seething ocean of magma—an ...
When the early Earth’s magma ocean crystallized 4.4 billion years ago, the deep mantle trapped an ocean’s worth of water, ...
À l’heure où vous lisez ces lignes, la Terre tourne sur elle-même, tout en tournant également autour du Soleil. Mais que se ...
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