VISUAL ARCHIVE / IMAGE STORY
Two Routes Out of One Galaxy
The same galaxy may be visible in one direction and obscured in another.

Artist’s interpretation of one young galaxy seen through radically different cosmic sightlines. In one direction, radiation escapes through an ionized corridor. In another, neutral filaments absorb and scatter the light. AI-generated artistic interpretation, not a scientific visualization.
THE OBSERVATION
What we can actually see.
THESAN calculates that Lyman-alpha transmission can vary strongly with viewing direction because neutral hydrogen, local gas, and motion affect the path. An observed faint line alone cannot identify which part of the route caused the loss.
THE ILLUSTRATION
What the artwork imagines.
The split corridors make two hypothetical sightlines visible at once. We cannot place cameras on opposite sides of the pictured galaxy, and the bright tunnel and dark filament are interpretive devices rather than recorded structures.
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. The same galaxy may be visible in one direction and obscured in another.
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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