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incancellabile to Astronomia ed Astronautica

« The time required for a protoplanetary disk to form a planet is 1-3 million years in stellar clusters with massive stars, but in low-mass stars can take 5-10 Myr, much more than expected previously: https://bit.ly/3ylbF3v Illustration: NASA/JPL-Caltech/T. Pyle (SSC) » https://pbs.twimg.com/med...