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Webb Telescope Releases Unprecedented 800,000-Galaxy Map of Early Universe

An open-access interactive database invites scientists and enthusiasts to probe distant galaxies, prompting reevaluation of early cosmic history.

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Overview

  • The COSMOS-Web field spans 0.54 square degrees—slightly larger than 7.5 full moons—and probes light from 13.5 billion years ago.
  • COSMOS2025 offers high-resolution photometry, structural measurements, redshifts and other physical parameters to enable detailed analyses of galaxy growth.
  • An intuitive web-based viewer allows users to locate specific objects and examine galaxy properties with a single click.
  • Researchers combined and aligned over 10,000 NIRCam and MIRI infrared images, correcting for observational biases to create the largest contiguous JWST image.
  • Initial findings reveal roughly ten times more early galaxies and hidden supermassive black holes than predicted by current cosmic evolution models.