Some of the earliest galaxies 'looked like little smudges' until James Webb started science operations last year.
, the $10 billion Webb observatory has already altered our perception of the cosmos. Some of the earliest galaxies it has observed are more evolved than expected for such an early evolutionary stage of the universe."Almost every single galaxy that we are finding shows these unusually strong emission line signatures indicating intense recent star formation.
According to NASA, the massive number of early galaxies is far beyond what was predicted prior to the launch of James Webb. "Previously, the earliest galaxies we could see just looked like little smudges. And yet those smudges represent millions or even billions of stars at the beginning of the universe," said Kevin Hainline of the University of Arizona in Tucson, who led a team investigating these early galaxies.
"Now, we can see that some of them are actually extended objects with visible structure," Hainline continued. "We can see groupings of stars being born only a few hundred million years after the beginning of time."
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