Showing posts with label Cosmic Dawn. Show all posts
Showing posts with label Cosmic Dawn. Show all posts
Friday, October 18
Our Universe is OLDER Than Originally Believed
In a groundbreaking discovery, the James Webb Space Telescope (JWST) has presented data that directly challenges our current understanding of the universe. For years, cosmologists have pegged the universe's age at approximately 13.8 billion years. Yet, the new JWST findings suggest that this may be a vast underestimation. But how has one telescope managed to disrupt such a long-held belief?
The universe's secrets are vast, but none has been as puzzling as the presence of 'impossible early galaxies'—so named due to their peculiar formation periods.
According to existing models, these galaxies, emerging during the cosmic dawn, roughly 500 to 800 million years post-big bang, shouldn't have evolved disks and bulges so quickly. "It's akin to seeing a toddler with the wisdom of an octogenarian," says a scientist, explaining the paradox. READ MORE...
Saturday, June 29
The Early Universe at Cosmic Dawn
The Cosmic Gems is one of the most highly magnified objects in space, thanks to a phenomenon called gravitational lensing. (Image credit: ESA/Webb, NASA & CSA, L. Bradley (STScI), A. Adamo (Stockholm University) and the Cosmic Spring collaboration)
Astronomers using the James Webb Space Telescope have observed five extremely dense proto-globular clusters along a hair-thin arc of glittering stars. The discovery could help them understand how the earliest galaxies formed.
The James Webb Space Telescope (JWST) has discovered what could be the earliest star clusters in the universe. JWST spotted the five proto-globular clusters — swarms of millions of stars bound together by gravity — inside the Cosmic Gems arc, a galaxy that formed just 460 million years after the Big Bang.
The Cosmic Gems arc gets its name from its appearance: When seen from our solar system, the star-studded galaxy looks like a hair-thin crescent due to the powerful gravitational influence of a foreground galaxy, which magnifies and distorts the distant galaxy's appearance. READ MORE...
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