Protostars 'sneeze' and produce rings of gas and magnetic flux as they grow

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Apr 2, 2026 - 02:20

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Protostars 'sneeze' and produce rings of gas and magnetic flux as they grow

Researchers have uncovered new insights into the early development of baby stars. As published in The Astrophysical Journal Letters, a research team from Kyushu University and Kagawa University reports that during the early growth period of a baby star, the protostellar disk—the dense disk of gas and dust that surrounds the star—expels magnetic flux and forms a giant warm ring of gas about 1,000 au (astronomical units) in size. The research team explains that these "sneezes" of matter and magnetic energy help the baby star release excess energy, leading to proper star formation.