File:First Stars- Timeline of the Universe (4352-Image).jpeg
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Size of this preview: 800 × 460 pixels. Other resolutions: 320 × 184 pixels | 640 × 368 pixels | 1,024 × 589 pixels | 1,280 × 736 pixels | 2,560 × 1,471 pixels | 6,135 × 3,526 pixels.
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English: Although we are not sure exactly when the first stars began to shine, we know that they must have formed sometime after the era of Recombination, when hydrogen and helium atoms formed (380,000 years after the big bang), and before the oldest-known galaxies existed (400 million years after the big bang). The ultraviolet light emitted by the first stars broke down the neutral hydrogen gas filling the universe into hydrogen ions and free electrons, initiating the era of Reionization and the end of the Dark Ages of the universe. |
| Date | 22 February 2019 (upload date) |
| Source | First Stars: Timeline of the Universe |
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This file is in the public domain because it was created by NASA, ESA and CSA. 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. This license does not apply if source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-03127. Copyright statement at webbtelescope.org. For material created by the European Space Agency on the esawebb.org site, use the {{ESA-Webb}} tag. |
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| current | 01:15, 1 December 2022 | | 6,135 × 3,526 (1.63 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://stsci-opo.org/STScI-01EVSWR8SA4PXH06ESABZ43J4E.jpg via Commons:Spacemedia |
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