Early Universe
A galaxy named Hebe, observed 400 million years after the Big Bang, shows evidence of pristine Population III stars formed solely from hydrogen and helium. Researchers led by Roberto Maiolino at the University of Cambridge used the James Webb Space Telescope to confirm spectral lines indicating extremely hot, massive stars. The finding offers insights into the early universe's star formation.
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Astronomers have proposed that an unusually large black hole in a galaxy from 13 billion years ago could be a primordial remnant from the universe's dawn. Spotted by the James Webb Space Telescope, the black hole is 50 million times the sun's mass but lacks surrounding stars, challenging traditional formation theories. Detailed simulations indicate it may have originated from density fluctuations after the big bang.