The James Webb Space Telescope's NIRCam captured a supernova, appearing three times in one image, showcasing different moments of its explosive event, which aids in understanding cosmic expansion.
Dr. Brenda Frye explained that the observed dots correspond to an exploding white dwarf star, visible due to gravitational lensing from a foreground galaxy cluster.
This capture allows observation at three different stages of the supernova's explosion, each time giving insights into cosmic distance and light travel across the universe.
The unique trifold image of the supernova provides valuable data for determining the Hubble constant, which characterizes the expansion rate of the universe and informs its age.
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