A near-infrared view of the Sagittarius B2 region captured by the James Webb Space Telescope. (Image: NASA, ESA, CSA, STScI, Adam Ginsburg (University of Florida), Nazar Budaiev (University of Florida), Taehwa Yoo (University of Florida); Image Processing: Alyssa Pagan (STScI))
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Moneycontrol29-12-2025, 11:25

James Webb Unveils Milky Way's Mysterious Star Factory Sagittarius B2

  • James Webb Space Telescope observed Sagittarius B2 (Sgr B2), a vast and powerful star-forming cloud near the Milky Way's center, offering new insights into its unusual efficiency.
  • Sgr B2, 26,000 light-years away, forms half the stars in its region but contains only 10% of the gas, challenging current star formation theories.
  • Webb's Mid-Infrared Instrument (MIRI) reveals dense star-forming pockets as glowing clumps, while dark areas indicate thick dust obscuring light.
  • Scientists suggest the cloud's chemical richness, with complex molecules, might efficiently cool gas, accelerating star formation in this extreme environment.
  • Further Webb observations are crucial to unravel why Sgr B2 is such an efficient stellar nursery, potentially reshaping galactic evolution models.

Why It Matters: Webb reveals Sgr B2's puzzling star formation efficiency, challenging theories and hinting at chemical roles.

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