Distant galaxies appear to have more than 12 tightly packed star-forming masses arranged like bundles of grapes. This is far more than astronomers who thought it was possible in the galaxies of the early universe.
The galaxy known as the “Cosmic Grapes” is thought to have been formed just 930 million years after the Big Bang. New research reveals that the galaxy has at least 15 giant star-forming masses on its rotating disk, forming what appears to be a bundle of bright purple grapes in the universe.
Using NASA’s James Webb Space Telescope (JWST) and the Atacama Large Millimeter/Submillimeter Array (Alma), astronomers have discovered galaxies through a technology known as foreground galaxies.
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“The object is known as one of the most powerful and critical distant galaxies ever discovered,” said in a statement from the University of Texas at Austin (UT Austin).
“Thanks to this powerful natural magnification, combined with the observations of some of the world’s most advanced telescopes, we have a unique opportunity to study the inner structure of distant galaxies with unprecedented sensitivity and resolution.”
Researchers have collected over 100 hours of telescope observations to study the primitive cosmic grape galaxy. Previous Hubble spatial telescope images of the object suggested a smooth, rotating disk, but the powerful resolution of Alma and JWST revealed something juicy.
Related: “Time Machine” reveals hidden structures in the first galaxy of the universe
“Our observations reveal that young starlights in early galaxies are dominated by several huge, dense, compact masses rather than smooth distribution of stars,” said Mike Boylan-Kolchin, professor of astronomy at UT Austin, in the same statement.
This finding changes our understanding of early galaxy growth and its overall rotation by revealing the initial clear link between the galaxy’s small internal structures (in this case, large star-forming masses), suggesting that many previously observed seemingly smooth galaxies may in fact be filled with similar hidden masses.
Their findings were published in Nature Astronomy on August 7th.
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