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Hubble discovered the farthest single star in history, 12.9 billion light-years away from the earth

On March 31, Johns Hopkins University announced that NASA's Hubble Space Telescope had discovered the furthest single star in history, 12.9 billion light-years away from the earth < p > < / P > < p > the star is named earendel (or whl0137-ls), which originates from ancient English and is translated as "Morning Star". Its mass is at least 50 times that of the sun and its brightness is millions of times that of the sun < p > earendel looks like the universe was about 900 million years old, only 7% of its current age. The previous farthest single star discovered by the Hubble Space Telescope in 2018 existed when the universe was about 4 billion years old, that is, 30% of its current age. Earendel may provide more clues for studying the earliest stars in the universe < p > under normal circumstances, even bright stars like earendel cannot be seen from the earth because there is a long distance between them. Previously, the smallest objects seen at this distance were clusters embedded in early galaxies < p > scientists detected earendel with the help of the giant galaxy cluster whl0137-08, which is located between the earth and the newly discovered stars. The gravity of this huge galaxy cluster distorts the structure of space and time, forming a powerful natural magnifying glass, which greatly magnifies the light from distant objects behind the galaxy, including earendel < p > however, scientists emphasize that earendel is not the farthest object scientists have found so far. Hubble has observed galaxies at a longer distance. However, that's a mixture of light from millions of stars. Earendel is the single luminous object that can be identified and farthest from the earth < p > many details about earendel are still uncertain, such as its quality, brightness, temperature and type, and even whether it has smaller and darker companion stars < p > scientists plan to make follow-up observations with NASA's recently launched James Webb Space Telescope to analyze the infrared of earendel and determine its more characteristics. Such information, in turn, may help reveal clues to the earliest stars in the universe, which is equivalent to opening a new window to the early universe. (small) < / P > < p >


2023-03-22 10:04:52

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