Galaxy Cluster SPT-CL J0615−5746
Galaxy Cluster SPT-CL J0615−5746
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In the distant past, when the Universe was only 460 million years old—meaning we are looking back across 97% of cosmic time—a young galaxy known as the Cosmic Gems arc (SPT0615-JD1) was already forming stars at an astonishing rate. Using the Webb telescope, astronomers have now identified five massive star clusters within this galaxy, the first ever found in such an early stage of cosmic history.
These tightly bound clusters offer a rare glimpse into how the earliest generations of stars came together to shape young galaxies. Their light has traveled for 13.3 billion years to reach us, magnified by the gravity of a foreground galaxy cluster in a phenomenon known as gravitational lensing.
Webb’s sharp infrared vision reveals the structure and distribution of these stars with remarkable clarity, providing a unique window onto how galaxies were born in the first few hundred million years after the Big Bang.
Image courtesy of NASA, ESA/Webb
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Printed Hahnemuhle Photo Rag Metallic, 340 gsm.
Image centered on either 8x10" paper (with minimum 1/2" borders) or 11x14" (with minimum 1" border).
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