Astronomers using the James Webb Space Telescope (JWST) have found that some of the universe's oldest galaxies are much brighter and heavier than scientists thought. The finding could lend credibility to an alternative theory to dark matter.
The standard model of galaxy formation predicts that only dim light should be seen from the primitive galaxies that took shape in the first billion years after the Big Bang. The unusually large and bright galaxies detected by JWST bolster predictions made by a rival theory known as modified Newtonian dynamics (MOND). The researchers published their findings Nov. 12 in The Astrophysical Journal.
