This early galaxy, designated JADES-GS-z14-0, has 10 times the amount of heavy elements that would be expected in a galaxy that existed just 300 million years after the Big Bang. The findings indicate that this galaxy was already mature in the early universe, challenging theories of galactic evolution.
JADES-GS-z14-0 was discovered in 2024 by the James Webb Space Telescope (JWST); its light had taken about 13.4 billion years to travel to us, equivalent to around 98% of the 13.8 billion-year-old universe's lifetime. The newly unearthed chemical composition of JADES-GS-z14-0 came courtesy of the Atacama Large Millimeter/submillimeter Array (ALMA).
JADES-GS-z14-0 was spotted alongside several other similarly early galaxies as part of the JWST Advanced Deep Extragalactic Survey (JADES) program. This project aims to provide vital insights into how stars, gas and black holes evolved within primordial galaxies when the 13.8 billion-year-old universe was very young.
Source: www.space.com
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