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NASA unexpectedly revealed a James Webb Space Telescope 'first light' image – Mashable

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With bleary eyes, the world’s new giant space telescope has roused from slumber and glimpsed its “first light,” the initial step toward an ultimate goal of seeing some of the universe’s “first light.”

Huh?

When it comes to the profoundly powerful James Webb Space Telescope, the terminology can be downright dizzying, especially when astronomers use the phrase “first light” twice in the same breath to mean two different things. It’s a double entendre unique to this unparalleled observatory.

“First light” means starlight has traveled through the optics of a telescope, bouncing off all its mirrors to reach its detectors for the first time. NASA confirmed Webb achieved that on Feb. 3.

“First light” is also a term cosmologists use to describe the first generation of stars formed in the universe, thought to be a period just 300 million years after the Big Bang. Once aligned and calibrated this summer, Webb is expected to see some of the oldest galaxies, over 13.5 billion light-years away.

In fact, about two decades ago, when Webb was in its infancy, astronomers dubbed it the “First Light Machine,” said Marcia Rieke, principal investigator for the Near Infrared Camera aboard Webb. The nickname came from the telescope’s main purpose: to look back in time and see the origins of the universe.

But scientists decided the name “First Light Machine” was a bit of a stretch, overselling the observatory’s capability.

“We kind of had to get away from that moniker because the very first light would be a star,” Rieke told Mashable. “You need a telescope 20 miles across to detect the first single star.”

NASA surprised the astronomy community by releasing a first-light picture Friday. Its subject HD84406, an isolated sunlike star just 260 light-years away, is a relatively close neighbor to Earth. This was not the awesome, jaw-dropping spectacle the space agency has promised for years. Rather, the frame showed 18 random, blurry golden spots — some stretched and distorted into jelly beans, some ghostly apparitions — each a copy of the same star.

The James Webb Space Telescope sees its first light of HD84406 in each of its 18 mirrors.
Credit: NASA

Relax, though. That doesn’t mean the telescope is broken, like a problem discovered with the Hubble Space Telescope, its legendary predecessor. It will take months to tune up Webb’s mirrors and instruments to perfection.

HD84406 can be found in the constellation Ursa Major. The star is a little too faint to see with the naked eye on Earth — a person needs binoculars to catch a glimmer — but it’s a bright object for Webb to fix its gaze on. In about four months, the 18 mirrors should be fully aligned, able to make the star look like one, clear star.

The James Webb Space Telescope focused on HD84406, a sunlike star near the bear’s head in the constellation Ursa Major.
Credit: Universal History Archive / Universal Images Group / Getty Images

“The first images are going to be ugly,” said Jane Rigby, a project scientist. “It’s like we have 18 mirrors that are right now little prima donnas, all doing their own thing, singing their own tune in whatever key they’re in, and we have to make them work like a chorus.”

Each mirror segment is functioning like its own telescope now, explained Lee Feinberg, Webb’s optical telescope manager. The team needs to match the images within nanometers. For perspective, if the primary mirror were the size of the United States, each of the 18 segments would be the size of Texas, requiring the team to match them up with an accuracy of about 1.5 inches.

HD84406, an isolated sunlike star found in the constellation Ursa Major, taken by the Sloan Digital Sky Survey.
Credit: Sloan Digital Sky Survey, via Aladin

It’s too early to say there’s definitely not a flaw in Webb’s mirrors, Feinberg said, but so far things look normal.

NASA took a sharp left turn in its plans with Friday’s rollout of the “first light” image. In earlier conversations with reporters, Webb scientists and managers said they would hold back pictures until the summer because the test pictures are notoriously bad. It’s not the first impression they want to make.

The Hubble Space Telescope saw its first light three decades ago.
Credit: Left: E. Persson (Las Campanas Observatory, Chile) / Observatories of the Carnegie Institution of Washington; Right: NASA / ESA / STScI

Perhaps the space agency didn’t want to repeat history: When NASA presented the first Hubble picture 32 years ago, the masses were underwhelmed. A photo of HD96755, a binary star 1,300 light years away, was a pixelated black-and-white smudge, barely better than a picture taken by a telescope on the ground in Chile.

“We want to make sure that the first images that the world sees, that humanity sees from this telescope, do justice to this $10 billion telescope,” and aren’t a “boring” star, Rigby said of Webb.


“For someone who’s worked on a project for 22 years, to see the light come through, it is beautiful.”

Contrary to previous remarks, NASA delivered early. Patrick Lynch, a spokesman for the agency, said NASA never made a formal decision on whether to release alignment images. The first science photos won’t come until the summer, but there will be “more updates” along the way, he noted.

Whether to make the first-light picture public was hotly debated, Rieke told Mashable: Though the space agency wants to be transparent about the fine-tuning process, some feared people would be reasonably crestfallen. Scientists, on the other hand, felt more than mere relief when Webb successfully collected HD84406’s photons.

“For someone who’s worked on a project for 22 years, to see the light come through, it is beautiful,” Rieke said.

The fuzzy picture might not be a disappointment after all.

On a subreddit about the telescope, the news that Webb had detected light from the star amazed user @I_love_limey_butts.

“So awesome! Just imagine some alien life forms 250 light-years away using our sun for system’s calibration lol.”

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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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