The James Webb Telescope has revealed that it has captured several images of two of the oldest satellite galaxies ever seen.
The images, taken by James Webb, revealed that the two galaxies were much brighter than expected, meaning astronomers are reconsidering their beliefs about how the first stars formed.
Studies conducted by scientists reveal that the two galaxies are billions of years old, only 100 million years after the Big Bang.
The James Webb Telescope can look at some of the oldest galaxies, because it is equipped with many high-resolution cameras capable of discovering many of the secrets of the universe in the infrared.
Previous research estimated that some of the galaxies Webb detected could have a redshift of up to 14, but the latest results are more accurate thanks to better instrument calibrations and indicate redshifts of 10.5 and 12.5, respectively.
Webb also exploits a phenomenon called gravitational lensing, in which a massive object such as a galaxy or cluster of galaxies has enough mass to warp in space and act like a magnifying glass, allowing researchers to see more distant galaxies behind it. .
