Hubble discovered the most distant star ever observed in the universe, says NASA

Posted on 3/30/2022 at 12:40 pm / Updated 3/30/2022 at 1:08 pm

(Credits: NASA, ESA, Brian Welch (JHU), Dan Coe (STScI); Image processing: NASA, ESA, Alyssa Pagan (STScI))

NASA’s Hubble Space Telescope has managed to detect light from a star that existed in the first billion years after the birth of the universe, the Big Bang. It is the most distant individual star ever observed.

call of arendelle, meaning “morning star” in Old English, The newly discovered star is so far away that it took 12.9 billion years for its light to reach Earth, which is visible to us when the universe was only 7% of its current age, with a redshift of 6.2.

“At first we almost didn’t believe it, it was far away from the farthest and most redshifted previous star,” said astronomer Brian Welch of Johns Hopkins University in Baltimore.

  • Details about the oldest star discovered by Hubble

    Details about the oldest star discovered by Hubble
    NASA, ESA, Brian Welch (JHU), Dan Coe (STSCI); Image processed by NASA, ESA, Alyssa Pagan (STScI)

  • Details about the oldest star discovered by Hubble

    Details about the oldest star discovered by Hubble
    NASA, ESA, Brian Welch (JHU), Dan Coe (STSCI); Image processed: NASA, ESA, Alyssa Pagan (STScI)

The smallest objects previously observed at such great distances are clusters of stars, embedded within early galaxies. This discovery promises to open an unknown era of very early star formation.

“Arendelle existed so long ago that it may not have the same raw material as today’s stars,” Welch explained. arendelle It will be a window into an era of the universe we are unfamiliar with, but because of which we know everything. It seems that we are reading a really interesting book, but we started with the second chapter and now we will have a chance to see how it all started.”

Brian Welch of Johns Hopkins University in Baltimore is lead author of the paper describing the novelty. The discovery was made from data collected during Hubble’s RELICS (Reionization Lensing Cluster Survey) program, led by co-author Dan Coe at the Space Telescope Science Institute (STScI) in Baltimore.

After studying the galaxy in detail, Welch determined that it was an extremely magnified star.

“The wide view sheds light on the position of the star arendelle With a wave in space-time (dashed line) that magnifies it and makes it possible for the star to be detected at such a great distance – about 13 billion light-years,” explains the authors of the article.

“Distortion and magnification are produced by the mass of a vast group of galaxies located between Hubble and Arendelle. The mass of the galaxy cluster is so great that it distorts the fabric of space, and looking through that space with a magnifier is like seeing through. Glass – Along the edge of the glass or lens, the appearance of things on the other side is distorted as well as magnified.”

The research team estimates that arendelle At least 50 times the mass of our Sun and millions of times brighter.

Confirmation with the James Webb Space Telescope

The team of astronomers also told that arendelle As seen by NASA’s James Webb Space Telescope, the star’s light is diffuse (red shift) and will allow better analysis of Webb’s high sensitivity to infrared light arendelle,

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About the author: Raven Weber

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