VISUAL ARCHIVE / IMAGE STORY
When Separate Clearings Meet
Many sources may have contributed to an increasingly connected ionized medium.

Artist’s interpretation of thousands of small primordial galaxies collectively transforming the intergalactic medium as their ionized bubbles begin merging across the cosmic web. AI-generated artistic interpretation, not a scientific visualization.
THE OBSERVATION
What we can actually see.
Reionization models follow populations of galaxies and the growth of ionized regions until much of the intergalactic hydrogen is ionized. How much faint, low-mass galaxies contributed remains a research question tied to their ionizing escape fractions.
THE ILLUSTRATION
What the artwork imagines.
Thousands of shining points and touching bubbles suggest a collective transformation. The number, geometry, and timing of these pictured mergers are invented and should not be read as a measured census.
FROM THE ILLUSTRATED ARTICLE
The story that inspired it.
The article follows the patchy return of transmissible light as early galaxies changed the gas between them. Many sources may have contributed to an increasingly connected ionized medium.
Read The Universe Was Dark Until Light Learned How to EscapeCHECK THE RECORD
The image interprets the research below. Follow the original work for the measurements and limits behind the scene.
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