Light from a long time ago reaches James Webb Space Telescope
Formed between 500 and 700 million years after the Big Bang, objects at the extreme limits of human observation have showed up on the James Webb Space Telescope , designed to uncover the early life of the 13.8 billion-year-old universe.
Prior to the result, galaxies with stellar masses as high as 100 billion times that of the Sun have been identified from one billion years after the Big Bang, but no earlier. Above and below: Images of six candidate massive galaxies, seen 500-800 million years after the Big Bang. One of the sources could contain as many stars as our present-day Milky Way, but is 30 times more compact. These images are a composite of separate exposures taken by the James Webb Space Telescope using the NIRCam instrument using several filters.Redshift indicates how fast the universe is expanding and is caused by the Doppler effect moving light to the red end of the spectrum.
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