Astronomers Find Vast Reservoirs of Hydrogen around Early Galaxies

Apr 6, 2026 - 14:00

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Astronomers Find Vast Reservoirs of Hydrogen around Early Galaxies

An enormous halo of hydrogen gas found in HETDEX data and superimposed over its location as seen in deep imaging from the NASA/ESA/CSA James Webb Space Telescope; present 11.3 billion years ago, this system glows from the combined light of many galaxies within it, with the brightest region represented in red. Image credit: Erin Mentuch Cooper, HETDEX / NASA / ESA / CSA / STScI.

Astronomers with the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) have detected enormous hydrogen halos, called Lyman-alpha nebulae, around more than 30,000 galaxies 10 billion to 12 billion years ago.

The post Astronomers Find Vast Reservoirs of Hydrogen around Early Galaxies appeared first on Sci.News: Breaking Science News.

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