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This new space telescope should show us what the universe looked like as a baby – WPRL

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Imagine knowing nothing about your childhood, nothing about where you came from, and spending years hunting for the answers. Then someone hands you a just-discovered trove of photographs of yourself as an infant. You’d finally be able to scrutinize every detail, searching for clues about yourself and how you came to be the way you are.

That’s just what it will be like for astronomers once a long-anticipated, $10 billion telescope finally blasts off into space in the coming days. If all goes well, it will soon show them what the universe looked like as a newborn, nearly 14 billion years ago.

NASA’s James Webb Space Telescope, the most powerful space telescope ever, is waiting at a launch site in French Guiana. It should be able to detect infrared light from galaxies that are so far away that the light from them has been traveling through space for almost the entire history of the universe.

That means when astronomers detect light from these stars and galaxies, it will be like receiving snapshots in time from the distant past.

“We are trying to build up the story of how the first galaxies ever emerged and how those evolved into galaxies we see today and we live in today,” says Maruša Bradač, an astronomer at the University of California, Davis. “If you don’t get the beginning right, it’s really difficult to figure out what the whole evolution looked like.”

A telescope, or a time machine?

The Milky Way Galaxy is humanity’s home sweet home, but the universe contains hundreds of billions, if not trillions of other galaxies.

“The Andromeda Galaxy is the closest big galaxy to ours. You can even see it with the naked eye, which is kind of cool,” says Bradač. “When you look at that galaxy, you see it as it was 2.2 million years ago.”

That’s because it takes 2.2 million years for light to travel all the way from the Andromeda Galaxy to Earth.

Using telescopes, astronomers have been able to see far more distant galaxies, which means they’ve been able to see farther back into the universe’s history. So far, the most distant galaxy ever discovered, GN-z11, was spotted by the Hubble Space Telescope.

To the untrained eye, it looks like a red blob, but “it’s basically like looking back in time about 13.3, 13.4 billion years ago,” says Charlotte Mason, associate professor at the Cosmic Dawn Center of the Niels Bohr Institute and the University of Copenhagen. “That’s just 300, 400 million years after the Big Bang.”

Hubble is limited in how far back in time it can look, so finding this galaxy was kind of a lucky break. Astronomers only spotted it because decades of using Hubble have let them scour much of the sky, and this particular early galaxy is surprisingly bright.

“It’s potentially more massive or is forming stars much more quickly than most theoretical models would predict,” says Mason. “Already, with that one galaxy, we’ve started to question some of our assumptions about how galaxies evolve.”

The James Webb Space Telescope should be able to provide more information about lots of additional galaxies this old and even older, which will help researchers understand how galaxies formed and changed into the familiar shapes and structures seen today.

“We really need much better samples, we need many more galaxies, and we need to step back in time to see how the galaxies are growing,” says Garth Illingworth, an astronomer with the University of California, Santa Cruz.

The James Webb Space Telescope has technology that should let it see back to 100 million to 200 million years after the Big Bang.

“So really, the period when we think the very first galaxies formed,” says Mason.

This telescope, which took decades to design and build, also has instruments that will let scientists probe the chemical make-up of the galaxies.

Watching the earliest stars in the universe explode

The holy grail for scientists who study the early universe is to find light from the very first galaxy, or the very first stars, says Mason. Those first stars would have formed from the elements created by the Big Bang, mainly helium and hydrogen.

“They set the stage for all of the subsequent galaxy and star formation,” says Mason. “They really fundamentally changed their surroundings.”

The odds of seeing those stars with the James Webb Space Telescope, however, are small. “There’s maybe even more of a chance that we might see one of those stars explode,” says Mason.

Those explosions would have spewed out other chemical elements forged in the earliest stars, setting the universe on a course where carbon, oxygen and other elements ultimately became the building blocks of life.

Illingworth believes that the James Webb Space Telescope won’t be able to see the very first star ever.

“That’s just practically impossible,” he says, adding that even the first little growing galaxies with just a few stars also aren’t likely to be detected.

“But we will go back to the point where we really start to see the galaxies at a very early stage, so that we can trace the whole history, essentially, from then, 200 million years after the Big Bang, through to now,” says Illingworth. “That’s what’s amazing about a telescope like this.”

Humans have long looked up at the skies and tried to make sense of our place in the universe, Mason points out, and the James Webb Space Telescope is the latest step forward in that ancient quest.

“How did we get here? What is the history of our universe that brought us to the point where we can sit here and think about it?” she asks. “To me, that really means starting at the beginning. How did the very first galaxies form in our universe? Because those are really the building blocks of the Milky Way that we live in.”

Copyright 2021 NPR. To see more, visit https://www.npr.org.

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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