Ancient droplets found in meteorites reveal the history of planet formation. About 4.5 billion years ago, Jupiter expanded quickly into the giant planet we see today. Its immense gravity disturbed the paths of countless rocky and icy objects, known as planetesimals, which resembled present-day asteroids and comets. These disturbances led to violent collisions so energetic […]



Summary

Ancient droplets in meteorites suggest Jupiter’s rapid growth 4.5 billion years ago significantly shaped early planet formation. Jupiter’s immense gravity disrupted planetesimals – rocky and icy objects similar to asteroids and comets – causing violent, energetic collisions. These collisions melted the planetesimals, creating molten droplets that rapidly cooled and formed the meteoritic building blocks we find today. The composition of these droplets provides a window into the chaotic early solar system, revealing the profound influence of Jupiter on the materials that ultimately formed planets.

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