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UrduTraditionally, planet formation has been described as a “bottom-up” process, as dust grains gradually collect into bigger conglomerations over tens of millions of years: from microns, to centimeters, to meters, to kilometers.
Tag: Protoplanets
Does this exoplanet have a sibling sharing the same orbit?
Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have found the possible ‘sibling’ of a planet orbiting a distant star.
Earth formed from dry, rocky building blocks
A study from Caltech shows that the early Earth accreted from hot and dry materials, indicating that our planet’s water—the crucial component for the evolution of life—must have arrived late in the history of Earth’s formation.