The single farthest star ever seen less than 1 billion years after the universe was born of the Big Bang, and could illuminate the earth’s earliest stars, has seen Further research is required.
Scientists are called the hoku “Earendel,” from Old English means “morning star” or “lighthouse.” Earendel, which has the technology name WHL0137-LS, is less than 50 times the amount of sunlight and millions of times as much light.
This new star was discovered by NASA Hubble Space Telescope, is so distant that its light took 12.9 billion years to reach Earth, which is seen to us as the time period of the entire universe at about 900 million years, only 7% of which is years now. So far, the single most distant star, seen by Hubble in 2018, has been around for about 4 billion years, or 30% of its current age.
“This knowledge will give us an opportunity to study a star in detail around the universe,” research lead author Brian Welch, an astrophysicist at Johns Hopkins University in Baltimore, told Space.com.
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Normally, a star like Earendel could not be seen from Earth from the great distance between them. Previously, the smallest objects that could be seen at a great distance were the clusters of stars that were embedded in the first stars.
Scientists discovered Earendel with the help of a large galaxy, WHL0137-08, located in the center. Earth and the new star. The gravitational pull of this large galaxy cluster captures the fabric of space and time, resulting in a really strong magnifying glass that greatly increases light from distant objects behind the glass, according to Earendel. . The light from the galaxy hosting Earendel was diverted into a long cluster called the Sunrise Arc by researchers.
The rare way that Earendel meets WHL0137-08 is that the star is directly visible through, or very close to, a button in the space to give the maximum amount of light, to stand out. Earendel from the great sparkle of his home galaxy. This effect compares the skin of a bathing water to the appearance of a bright glow under the water in the sun – the ripples on the skin are lenses and turn the sun into the brightest light in the sun. interior floor.
Welch says this is not the farthest thing scientists have ever seen. “Hubble looked at galaxies from afar,” he explained. “But we see light from their millions of stars combined. This is the farthest distance we can see light from a single star.”
He also knew that this star was far away, not ancient. “We see the star as 12.8 billion years ago, but that doesn’t mean the star is 12.8 billion years old,” Welch said. But they are only millions of years old and they cannot grow old.
“Because of its size, it can’t survive to this day, because more and more big stars will quickly burn their wood and explode, or fall into it. black doorAt the same time, “he added Earendel.” The oldest stars were created at the same time, but they are much smaller, so they continue to shine to this day. “
Many of the details about the Earendel are not clear, such as its mass, shine, heat and texture. Scientists are not sure if there is one or two Earendel – most of Earendel is a small friend, or Earendel is more likely than his partner.
Scientists hope to do the observation with the release of NASA The James Webb Space Telescope analyze Earendel’s infrared light and capture most of its features. This knowledge could help to illuminate the first stars of the universe, which was created before the universe was filled with the burdens created by the later generations of big stars.
“I think one of the most exciting things about this event is that it opens up a whole new window to the first world,” Welch said. “Usually at these distances, we see full galaxies that are small, sparse objects, and then we see details about the stars in them from their combined light.”
Not so for Earendel. “With this star lens, we can independently study its light,” he said. “This allows us to accurately compare the stars on the Milky Way and look for differences that will improve our ability to see the stars in the future. “
Scientists are specific their knowledge online Wednesday (March 30) in the journal Nature.
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