The Hubble Space Telescope captured the farthest star ever seen, according to a study published today (March 30) in the journal. so so. Astronomers have seen the huge star – nearly extinct in an explosion about 13 billion years ago – thanks to a phenomenon called gravitational lensing.
“This very good cosmic event has taken place,” said astronomer Michelle Thaller of NASA’s Goddard Space Flight Center. “Everything is in order. A cluster of galaxes close to the space lensing, of course, turns the sky into this natural telescope.
Those gravity lenses aren’t very strong, said Brain Welch, a PhD candidate at Johns Hopkins University who led the study. “Normally, you see, if you have a galaxy lens, it’s multiplied by a small number or ten.” However, the alignment is precise, leading to a star at the edge of the galaxy lens that is magnified by some kind of thousands.
In this case, ”Welch said,“ we were really lucky with the alignment.
Earendel: Meet the morning star
The newest but longest-dead star was chosen WHL0137-LS. However, researchers have given the ancient beacon the nickname “Earendel,” which is the old English word for “morning star” or “wake -up light.”
A few years ago, Hubble saw a very distant star called Icarus, which shone during the entire universe at about 9.5 billion years, or 30 percent of its age today. heart. However, Earendel broke the story that Icarus kept. Earendel lived about 12.9 billion years ago, when it was only 6 percent of the earth’s age today.
“When the light we see from Earendel was released, the entire universe was less than a billion years old,” said historian Victoria Strait, a postdoc at Cosmic Dawn Center in Copenhagen, in an advertisement. “At that time, it was 4 billion light-years away from the proto-Milky Way, but in the nearly 13 billion years light has taken us, the entire universe is now 28 billion light-years away. aku nei.
Earendel shone millions of times as much as the sun and could weigh about 500 pounds a day. But researchers estimate that it is between 50 and 100 percent daily. “Stars don’t live as long as that,” Thaller said. “So we see light from a star that has lived two million years. It’s been a long, long time coming. “
“So that’s the nature of this wonderful gift from around the world,” Thaller said. “It’s a time to look back in time. It’s a time to learn more about where we came from, what things were like these billions and billions of years ago.
Moving forward, Hubble’s senior project scientist Jennifer Wiseman hopes “as we learn more, [we’ll] Learn about how it worked, what happened, and begin to understand how the first stars in the universe gave their galaxies to new generations of planets. stars like our own Sun.
“Educating Ireland is going to be a window into an era of the universe that we’re unfamiliar with, but it has guided everything we see,” Welch said in an announcement. click. “It seemed like we read an interesting book, but. We started with chapter two, and now we have a chance to see how it started.