JADES-GS-z14-0: The galaxy that was once the farthest known galaxy.

JADES-GS-z14-0 JADES-GS-z14-0 is a high-redshift Lyman-Break galaxy in the constellation Fornax that was discovered in 2024 using NIRCam as part of the JWST Advanced Deep Extragalactic Survey (JADES) program. It has a redshift of about 14. 18, making it one of the most distant galaxies and astronomical objects ever discovered. According to current theory, this redshift corresponds to a time about 13. 5 billion years ago, approximately 300 million years after the Big Bang, or about 2% of its current age. Discovery JADES-GS-z14-0 was observed using the James Webb Space Telescope's Near-Infrared Spectrograph (NIRSpec) in 2024, and it measured a redshift of 14. 32. Its age, size, and luminosity added to a growing body of evidence that current theories of early star and galaxy formation are incomplete. A larger study using JWST NIRCam "Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic Star Formation Rate Density 300 Myr after the Big Bang" (Robertson et al. 2024) gave JADES-GS-z14-0 a photometric redshift of z = 14. 39+0. 23−0. 09. Characteristics JADES-GS-z14-0 is 1,600 light years (ly) wide and very luminous. Spectroscopic analysis revealed the presence of strong ionized gas emissions, including hydrogen and oxygen.