James Webb unveils hidden stellar nurseries and massive-star populations in Sagittarius B2

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The James Webb Space Telescope has delivered the most detailed infrared view yet of Sagittarius B2, the Milky Way’s largest and most vigorous star-forming molecular cloud near the galactic centre, revealing dense populations of newborn and massive stars, fine gas structures and complex magnetic fields.

Discovered 2025-09-24T22:21:58.125721-07:00 | 2025-09-24T22:21:58.125721-07:00

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What Hype is tracking

  • Confirms JWST’s unique capability to resolve dense, dust-obscured star formation and chemistry in the infrared, building on earlier Webb detections such as silane in a brown dwarf and high-resolution images that revealed thousands of newborn stars.
  • Directly informs models of massive-star formation and magnetic-field-driven cloud dynamics by imaging the Milky Way’s largest star-forming cloud and its dense, massive-star populations—data that will shape theoretical and observational priorities for infrared astronomy.

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10
First Seen
2025-09-24T22:21:58.125721-07:00
Latest Update
2025-09-28T23:39:51.260573-07:00
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Space

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