A new international study has found that very distant galaxies formed about 900 million years after the Big Bang

2022-06-17 0 By

China News Network Beijing on March 31 (reporter Sun Zifa)In a new astronomy paper published in nature, researchers report Hubble Space Telescope observations of an extremely distant single star or stellar system that formed about 900 million years after the Big Bang.The discovery is much further out than previous observations of similar systems and is quite early in the evolution of the universe.The object described by senior author Brian Welch of Johns Hopkins University and colleagues is nicknamed Earendel, from an Old English word meaning “morning star” or “rising light.”Gravitational lensing (a phenomenon in which a distant object is magnified by a closer object) revealed that it could be a single or double star system.Erendil estimated its mass to be more than 50 times that of the Sun and calculated a redshift of 6.2, they reported in the paper.Redshift, which means how much light is “stretched” in its path, can be used to infer celestial distances;The higher the number, the farther away (or earlier in the history of the universe) the object is.A small redshift of about 1-1.5 has been observed for magnifying single stars in the past.The exact details of the star’s temperature, mass and spectral properties are currently unclear, and the authors hope that the James Webb Telescope may provide such information in the future.Disclaimer: This article is reproduced for the purpose of passing on more information.If the source is wrong or violated your legitimate rights and interests, please contact the author with proof of ownership, we will promptly correct, delete, thank you.Email address: newmedia@xxcb.cn