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NASA test firing of huge SLS moon rocket sets stage for maiden flight – Barrie 360 – Barrie 360

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William Harwood – CBS News

NASA and Boeing test fired a gargantuan Space Launch System rocket for the second time Thursday, a full-duration eight-minute “hot fire” needed to clear the way for a long-delayed maiden flight late this year or early next to kick off the space agency’s Artemis moon program.

Two months after glitches cut short an initial attempt on January 16, the 21-story SLS core stage’s four shuttle-heritage RS-25 engines ignited at 120 millisecond intervals at 4:37 p.m. EDT, quickly throttling up to a combined thrust of 1.6 million pounds of thrust with an ear-splitting roar.

The white-hot exhaust plumes instantly vaporized torrents of cooling water flooding the base of the massive B-2 test stand at NASA’s Stennis Space Center in Mississippi, just east of New Orleans, sending huge clouds of steam billowing into a cloudless blue sky.

While rockets normally fade from view and hearing as they climb toward space, the SLS booster remained in firmly in place, blasting a nearby viewing area with a crackling wall of sound as the engines burned through more than 700,000 gallons of liquid oxygen and hydrogen propellants.

The core stage of the Space Launch System, NASA’s planned moon rocket, is tested at the Stennis Space Center near Bay St. Louis, Miss., on March 18, 2021. With this critical test finally finished, NASA now will send the rocket segment to Kennedy Space Center for launch preparations. NASA VIA AP

The test run called for throttling the engines down and back up as they will be during an actual flight, testing the rocket’s thrust vector control, or steering, system and monitoring how propellant tank pressures are maintained as the fuel level changes.

Data from hundreds of sensors were recorded throughout to precisely characterize a wide variety of parameters, including critical vibration levels at different thrust settings. The data will feed into 10 “detailed verification objectives,” or DVOs, required to demonstrate the rocket is ready for flight.

Mission managers said they expected to collect all the data needed in the first four minutes or so, but they let the engines run twice that long to simulate an actual climb to space. That also allowed them monitor performance when the tanks are nearly empty and the rocket weighs a fraction of its initial 2.3 million pounds.

“This is not by any means a vanilla firing the core stage,” Boeing SLS program manager John Shannon said before the test. “Since it’s a highly instrumented vehicle, we’re taking that opportunity to do some very aggressive maneuvers of the thrust vector control system. … It’s going to stress the vehicle.

“Our primary goal is to not only get the hot fire data but also to protect the stage (for use as) the first flight article. So, we’re kind of threading a needle here between keeping the vehicle safe and gathering this data.”

The engines ended up firing for eight minutes and 19 seconds. John Honeycutt, manager of the SLS program at the Marshall Space Flight Center in Huntsville, Ala., said “everything that we’ve seen in the test today looks nominal. So, I would say the core stage got an A-plus.”

Assuming a more detailed analysis confirms that, “it is still possible to fly by the end of the year,” Steve Jurczyk, NASA’s acting administrator, told CBS News before the test. “Now, we don’t have a lot of schedule margin to the end of the year (but) it’s possible.”

That said, he added, “we know that integrating a vehicle at the Cape the first time through, we’re going to find some issues and so, we could push past the end of the year. But if things go well, we absolutely could get the work done and launch in the November-December time.”

NASA is counting on the Space Launch System rocket to propel the agency’s Lockheed Martin-built Orion crew capsules on flights back to the moon, using commercially built landers to carry astronauts down to the surface for the first time in 50 years.

For an actual launch, the Space Launch System first stage will be attached to a pair of already tested Northrop Grumman solid-fuel boosters, each one generating 3.6 million pounds of thrust, and a hydrogen-fueled upper stage topped off by an Orion crew capsule.

The fully assembled SLS rocket will weigh 5.75 million pounds, stand 322 feet tall and generate 8.8 million pounds of thrust at liftoff, making it the most powerful operational rocket in the world.

It also will be one of the most expensive ever built. NASA’s inspector general reported last March that total SLS program costs were expected to climb above $18 billion by the time the Artemis 1 rocket finally takes off.

The high price tag has prompted critics to argue in favor of less powerful, but much less expensive, boosters like SpaceX’s Falcon Heavy. But NASA managers say the SLS is the only rocket available in the near term that is capable of accommodating the Orion crew capsule and other large components envisioned for the Artemis program.

During the initial test run in January, the booster’s flight computer shut down the engines about one minute into the firing after detecting low pressures in the hydraulics used by the thrust vector control steering system. That problem was blamed on software, which was modified for the second attempt.

Other adjustments were made, along with repairs of a liquid oxygen valve that combined to push the second attempt to Thursday.

SLS rocket test
As reporters and photographers look on, a towering plume of steam billows into the Mississippi sky as the four RS-25 engines powering the first stage of NASA’s Space Launch System rocket fire during an eight-minutes test run. WILLIAM HARWOOD/CBS NEWS

If analysis of telemetry confirms the rocket performed properly the second time around, engineers will spend about a month carrying out detailed inspections and readying the core stage for shipment by barge to the Kennedy Space Center.

Once in Florida, the stage will be bolted to a pair of already-assembled solid-fuel boosters, each one taller than the Statue of Liberty, followed by attachment of its waiting second stage and an Orion crew capsule.

core-stage-infographic.jpg
A NASA infographic showing the components of the Space Launch System rocket’s core stage. NASA

Assuming no other major problems develop, NASA could be ready to launch the first SLS on an unpiloted maiden flight — Artemis 1 — before the end of the year, sending the Orion capsule on a long, looping flight around the moon and back.

The first piloted flight, Artemis 2, would carry astronauts on a similar around-the-moon mission before sending the next man and the first woman to the lunar surface in the program’s third flight.

Working on a schedule imposed by the Trump administration, NASA planned to launch the Artemis 2 mission in the 2023 timeframe, followed by a piloted moon landing by the end of 2024.

But Congress has not yet provided the full funding needed for a new lunar lander and while the Biden administration has indicated support for the Artemis program, it’s not yet clear when a landing could be attempted.

banner image: Artist’s impression of an SLS rocket blasting off. NASA

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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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