Maisie's galaxy, named in honor of Steven Finkelstein's daughter, was detected 390 million years after the Big Bang. The James Webb Space Telescope has enabled astronomers to confirm that a galaxy initially spotted last summer ranks among the earliest ever observed. These findings were recently pub
Spectroscopic observations reveal that Maisie’s galaxy, named after Steven Finkelstein’s daughter, was detected 390 million years after the Big Bang. That makes it one of the four earliest confirmed galaxies ever observed. Credit: NASA/STScI/CEERS/TACC/ University of Texas at Austin/S. Finkelstein/M. Bagley
Watch a video simulating a flight from Earth to Maisie’s galaxy. Credit: Visualization: Frank Summers , Greg Bacon , Joseph DePasquale , Leah Hustak , Joseph Olmsted , Alyssa Pagan Science: Steve Finkelstein , Rebecca Larson , Micaela Bagley Objects in space don’t come printed with a time stamp. To infer when the light we observe leaves an object, astronomers measure its redshift, the amount that its color has been shifted due to its motion away from us. Because we live in an expanding universe, the farther back in time we look, the higher an object’s redshift.
“This was a kind of weird case,” Finkelstein said. “Of the many tens of high redshift candidates that have been observed spectroscopically, this is the only instance of the true redshift being much less than our initial guess.”
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