The James Webb Space Telescope (JWST) has discovered galaxies formed very early in the Universe, challenging our understanding of galactic evolution.
The most distant known galaxy, JADES-GS-z14-0, is seen at an age of less than 300 million years.
Observations from ALMA found the presence of oxygen in JADES-GS-z14-0, suggesting the galaxy had enough heavier elements to start forming the second generation of stars.
The detection of oxygen in the early galaxy indicates that within less than 300 million years, the Universe was forming diverse stars and had the elements necessary to form the building blocks of life.