Record-Breaking Discovery! Webb Space Telescope Finds the Most Distant known Galaxy

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2024-06-02

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The National Aeronautics and Space Administration (NASA) recently announced that the James Webb Space Telescope (JWST) identified one of the most distant galaxy known, named "JADES-GS-z14-0," which originated around 290 million years after the Big Bang. This discovery is a significant milestone in the study of the early cosmos, adding to our understanding of the "Cosmic Dawn."

The Webb Space Telescope's extraordinary observational capabilities have resulted in several notable discoveries for the scientific community since its activation in 2022. An international team of astronomers confirmed the discovery of "JADES-GS-z14-0" in early 2023, and subsequent observations confirmed its redshift value of 14.32 (meaning the light's wavelength is 14 times longer than normal), indicating that the galaxy's light was stretched into the infrared region due to the universe's expansion before reaching Earth.

Researchers at the Harvard-Smithsonian Center for Astrophysics (CfA) noted that the light from this galaxy is predominantly derived by a vast number of young stars rather than a supermassive black hole, suggesting the fast birth of galaxies in the early universe. Simultaneously, the Webb Space Telescope's Mid-Infrared Instrument (MIRI) observed significant ionized gas emissions from this galaxy, indicating that it is abundant in hydrogen and oxygen.

The team also discovered another galaxy, "JADES-GS-z14-1," which has a little lower spectral redshift value than "JADES-GS-z14-0," but is nonetheless of substantial scientific worth. The brightness and magnitude of these two galaxies are incredible, with "JADES-GS-z14-0" having a diameter of more than 1,600 light-years and a mass of hundreds of millions of times that of the Sun.

Assistant Research Professor Kevin Hainline vividly described: "If the universe were a two-hour movie, these galaxies would appear in the first two and a half minutes." These observational findings not only call into question existing theoretical models, but also provide valuable data for future cosmic study.

This finding by the Webb Space Telescope offers new insight on humanity's exploration of the universe’s genesis and development, revealing the magnificent scenes of the cosmos’s initial few hundred million years. NASA claimed that they would continue to utilize the Webb Telescope to conduct deeper studies in order to find other secrets about the early universe.