Summary #384

New clues about how ancient galaxies lit up the Universe
  • Observations by NASA´s Spitzer Space Telescope indicated that some of the first galaxies that originated about a billion years after the big bang were brighter than the stars we perceive today.
  • According to the researches, such brilliance was caused by the ionizing radiation generated for the release of electrons from the hydrogen atoms that existed in the early universe.
  • This cosmic event known as the hydrogen reionization transformed the original opaque cosmos into the sparkling universe we see today.
  • The NASA / CSA / ESA James Webb Space Telescope to be launched in 2021 will investigate the possible causes that originated this formidable cosmic phenomenon.


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