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3mo ago

Webb’s COSMOS-Web Survey Yields Deepest Map With Nearly 800,000 Galaxies

The public launch offers a searchable cosmic archive that is already prompting scientists to reconsider theories of galaxy evolution.

New Deepest Map Of The Universe Reaches Back 13.5 Billion Years Into The Past
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Overview

  • The COSMOS-Web survey catalog includes photometry, structural measurements and redshifts for almost 800,000 galaxies in a contiguous deep-field image.
  • Researchers combined over 250 hours of JWST NIRCam and MIRI data to map a sky region exceeding seven full moons and peer back 13.5 billion years.
  • Galaxy counts in the earliest epochs are roughly ten times higher than pre-JWST models predicted, prompting a reevaluation of rapid star and black hole growth.
  • An online interactive viewer now grants public access to detailed galaxy properties and enables custom searches across the dataset.
  • By making high-resolution cosmic data openly available, the COSMOS collaboration seeks to democratize astronomy and accelerate new discoveries.