NASA’s James Webb Space Telescope has discovered GLASS-z13, the oldest galaxy observed yet, besting the previous record (GN-Z11) by 100-million years. The stars in this galaxy that date to 300-million years after the Big Bang have the mass equivalent to one billion suns, and are also relatively small compared to our own in the Milky Way, which is 100,000 light-years in diameter.
Astronomers from Harvard and the Smithsonian Center of Astrophysics in Massachusetts also found another galaxy that very similar in age to GN-Z11, called GLASS-z11. Just for comparison, GLASS-z13 spans about 1600 light years across, while GLASS-z11 is around 2300 light years wide. Back in the world of film, Roundhay Garden Scene is the oldest recorded film scene.
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We found two very compelling candidates for extremely distant galaxies. If these galaxies are at the distance we think they are, the universe is only a few hundred million years old at that point,” said Rohan Naidu, a graduate student in Harvard university’s astronomy department.
