“This is a very special, unique site of accelerated galaxy evolution, and Webb gave us the unprecedented ability to measure the velocities of these seven galaxies and confidently confirm that they are bound together in a protocluster,” said Takahiro Morishita of IPAC-California Institute of Technology, the lead author of the study published in theThe precise measurements captured by Webb’s Near-Infrared Spectrograph were key to confirming the galaxies’ collective distance and the high...
This video explains how very distant galaxies are magnified through the phenomenon of gravitational lensing. Gravitational lenses can magnify the light from distant galaxies that are at or near the peak of star formation. This effect allows researchers to study the details of early galaxies too far away to be seen with even the most powerful space telescopes. Credit: NASA, ESA, STScI, Leah Hustak
Exploring how large clusters like Pandora and Coma first came together has been difficult, due to the expansion of the universe stretching light beyond visible wavelengths into the infrared, where astronomers lacked high-resolution data before Webb. Webb’s infrared instruments were developed specifically to fill in these gaps at the beginning of the universe’s story.
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