NASA’s Hubble Space Telescope has seen farthest single star ever found in outer space.
Light from the star—dubbed Arendelle from an Anglo-Saxon word meaning rising light or morning star—took 12.9 billion light-years to reach Earth and formed about 900 million years after the Big Bang. Arendelle is 8.2 billion years older than Earth and the Sun and 12.1 billion years older than the first animal appearances on the planet, reports Raffi Letzter ledge, Arendelle was described in a paper published this week Nature, Study sheds light on the youngest stars to shine in the universe.
“When the light we see from Arendelle was emitted, the universe was less than a billion years old,” says study author Victoria Strait, an astronomer at the Cosmic Dawn Center in Denmark. Statement, “At the time, it was 4 billion light-years away from the proto-Milky Way, but during the roughly 13 billion years it took light to reach us, the universe has expanded to what is now a staggering 28 billion light-years.” far.”
Astronomers suspect that Arendelle is even older than Icarus, the previous record-holder detected by Hubble in 2018. Icarus Appeared in Outer Space 9.5 Billion Years Ago, Jake Parks to Report astronomy,
Officially known as WHL0137-LS, Arendelle was detected coincidentally when a galaxy cluster aligned with the ancient star and magnified through a phenomenon called gravitational lensing, a statement explains. Gravitational lensing can magnify distant objects when their light bends and travels along the gravitational curvature of a massive object such as a galaxy or galaxy cluster, reports Mitchell for Star. science alert,
As light from a distant object is bent, the distant object appears distorted or blurry, but it is also duplicated and magnified. After detecting the light, astronomers can determine where the magnified object is. When looking at objects in the universe or from the cosmic dawn, smears of known light are usually galaxies, per science alert, The Hubble Telescope detected Arendelle after coming home to a magnified streak of light magnified by a nearby galaxy.
Within the Milky Way, study author Brian Welch, astrophysicist Johns Hopkins UniversityThe primordial star was found to be sitting at the top of the lensing critical curve, or where magnification is most intense, science alert Report. Before reaching Hubble, the star near the critical point was magnified between 1,000 and 40,000 times. The Milky Way, dubbed the Sunrise Arc due to the gravitational lensing effect, made it appear as a long crescent shape ledge Report.
Astronomers studied Arendelle for 3.5 years, using various models to confirm that the star was real and not a temporary influence from another source of light. Astronomers have discovered that the giant star is millions of times brighter than the Sun, Charles Q. reports for choi Space.com, Although Arendelle was only recently discovered, the giant star is long gone and most likely died out in a fiery eruption 13 billion years ago, astronomy Report.
“Given its mass, it has almost certainly not survived to date, as more massive stars burn through their fuel faster and thus explode, or collapse. black holesquick,” Welch tells Space.com, “The oldest known stars may have formed at the same time, but they are much less massive, so they continue to shine to this day.”
Details such as its exact brightness, mass, temperature and type of star remain uncertain, Space.com Report. Estimated to be anywhere from 50 to 500 solar masses, it is possible that Arendelle may be a binary star system rather than a single star, according to a statement.
However, scientists plan to make follow-up observations of Arendelle with the James Webb Space Telescope (JWST) to analyze the star’s infrared light. JWST’s more advanced optics may be able to pinpoint whether Arendelle is a single star or a cluster of star systems, ledge Report.
“With James Webb, we will be able to confirm that Arendelle is really just a star, and at the same time determine what type of star it is,” said a researcher at The Cosmic Dawn Center at the Niels Bohr Institute. Astrophysicist, study author Sune Toft. Explains in a statement. “Webb will also allow us to measure its chemical composition. Potentially, Arendelle may be the first known example of an early generation of stars in the universe.”