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More than 13 billion years ago, during the Era of
Reionization, the universe was a very different place. The gas between galaxies was largely opaque to energetic light, making it difficult to observe young galaxies. As stars and young galaxies continued to form and evolve, they began to change the
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What allowed the universe to become completely ionized, leading to the “clear” conditions we see in the present-day universe? Researchers using the James Webb Space
Telescope found that galaxies are overwhelmingly responsible toward the end of this period. Read about their findings.
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More than 13 billion years ago, during the Era of
Reionization, the universe was a very different place. The gas between galaxies was largely opaque to energetic light, making it difficult to observe young
262:. NASA Webb material is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA/CSA is credited as the source of the material.
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gas around them. Over hundreds of millions of years, the gas converted from neutral, opaque gas to ionized, transparent gas.
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The following pages on the
English Knowledge (XXG) use this file (pages on other projects are not listed):
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The material was created for NASA by Space
Telescope Science Institute under Contract NAS5-03127.
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This license does not apply if source material from other organizations is in use.
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Conditions During the Era of
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
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