The images and data will help us understand how galaxies evolve.
When scientists started working on Webb over two decades ago, one of the mission's primary goals was to see the first galaxies in the universe. These galaxies, so far away that their light takes billions of years to travel to the, are cosmic relics — preserved, in our view, exactly as they looked near the beginning of the universe, when the light now reaching Earth first left the distant galaxies.
": Wavelengths we humans see as blue light stretch to redder light, and wavelengths of visible light stretch to infrared light.Hubble Space Telescope "[Webb] goes to longer wavelengths, then we can see before with Hubble, so we're able to see farther back in time," Coe said. "We're also able to see the full picture of these early galaxies."
"When galaxies collide, they don't go bang, they kind of go slosh," Jonathan Gardner, deputy senior project scientist for Webb, said during a media event held in late June."Because galaxies are mostly empty space, the stars themselves rarely collide with each other. But the gas does collide and can trigger bursts of star formation, forming the next generation within the final merged galaxy.
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