All articles tagged with #stellar population
New JWST study of nine early galaxies, combined with VLT data, reveals a larger population of faint, small stars than in the Milky Way. This means those galaxies contain more mass than previously estimated, with one example reaching up to four times the prior mass. The finding could require revisions to galaxy-formation models and suggests more planets may have formed around small stars in the early universe.
The James Webb Space Telescope has revealed that a speck of light observed by the Hubble Space Telescope is actually one of the oldest galaxies ever discovered, known as Gz9p3, seen just 510 million years after the Big Bang. The galaxy's massive size and mature state challenge previous understanding of early galaxies, and its complex shape indicates an ongoing merger between two galaxies. The observations also suggest a rapid accumulation of stars and metals in the early universe, shedding light on the role of galaxy mergers in stellar population growth.