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Mini-satellite constructed by N.B. university students set to orbit Earth

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A group of New Brunswick university students is one step closer to launching a mini-satellite into space.

Satellite Violet is named after New Brunswick’s provincial flower and is about the size of a loaf of bread. It successfully passed the testing phase at the Canadian Space Agency in Montreal and is headed to the International Space Station early next year.

Once the satellite is deployed from the space station into Earth’s orbit, the group will be able to perform scientific experiments to study the planet’s upper atmosphere and weather by capturing GPS signals and tracking Violet’s movements.

More than 300 people, including 274 students, have been involved in building the satellite since 2018, according to Brent Petersen, a professor in the UNB department of electrical and computer engineering.

“Once Violet is in space, the only way you can communicate with it is through radio,” said Petersen.

UNB professor Brent Petersen says the mini-satellite project was funded by the Canadian Space Agency and with a grant from the New Brunswick Innovation Foundation. (Submitted by Brent Petersen)

“Between now and May we have a lot of work to do, to get our ground station and communication ready.”

A 17-foot antenna is assembled on the roof of UNB’s Gillin Hall, and the team is working toward getting their ground station running.

The ground station is a control room in Gillin Hall where the team will interact with Violet via radio signals. The room is connected to the roof antenna through wires and has computers and radio equipment to administer their experiments.

 

A small piece of New Brunswick is set to orbit Earth

 

A mini-satellite, created by a group that includes more than 200 UNB students, will be launched as part of a project by the Canadian Space Agency.

Students from different engineering departments at the Université de Moncton and the New Brunswick Community College in Saint John also worked on Violet, said Peterson.

UNB is responsible for the controlling and communication phase of the satellite, meaning that they will conduct the experiments and troubleshoot any software or technical challenges, he said.

“The team that was here is the anchor of the relay race, and they brought Violet over the finish line.”

The mini-satellite project was coached and funded by the Canadian Space Agency at a cost of about $200,000, and another $200,000 was granted by the New Brunswick Innovation Foundation, Petersen said.

The satellite is small, about the size of a loaf of bread. It has an aluminum frame measuring 10 x 10 x 20 centimetres, several circuit boards and solar panels. (Submitted by the Canadian Space Agency)

Violet is one among many satellites taking part in the Canadian CubeSat project, he said, which aims to train post- secondary students in “how to design, build, test, launch and operate a mission from space,” said Tony Pellerin, director of engineering capacity development at the Canadian Space Agency.

‘Seems like our baby’

Noah Lydon has been the mechanical lead for the last seven months of Violet’s development.

Currently in his third year of engineering at UNB, Lydon said he “wanted to do something practical” using his favourite subjects — math and physics — and building a cube satellite felt perfect.

Noah Lydon was the mechanical lead for Violet and ensured that its hardware was space-ready. (Rhythm Rathi/CBC)

He worked on Violet’s hardware in the final stages and had to pick up from where former students left off, which was challenging.

“I feel like I have a big role in this project,” Lydon said.

This antenna will oscillate once it begins to communicate with Violet. (Rhythm Rathi/CBC)

“I had to make all the different parts work together, so sometimes parts didn’t fit exactly how they were supposed to, so we had to kind of redesign a bit and just make everything work and fit into the satellite.”

Lydon said he was happy to see his first satellite ace all the testing at the space agency. He and his teammates had the opportunity to place it in the deployer — a box that will sit in the rocket carrying Violet to the space station.

“It was definitely experience of a lifetime.”

“Seems like our baby, so saying goodbye to it was definitely a bit emotional but it’s all good because that’s what we wanted,” he said.

The satellite has an aluminum frame measuring 10 x 10 x 20 centimetres, several circuit boards, some solar panels and will take about 90 minutes to complete one trip around the Earth.

Beginning in 2022, 11 CubeSats have been launched. Pellerin said Violet, along with two other satellites, will be the last batch entering space, concluding the space agency’s project and bringing the total number of Canadian mini-satellites orbiting around Earth to 14.

The space agency will deliver Violet to NASA in a box, then a Falcon 9 rocket will take the box to the International Space Station on March 4, he said.

An astronaut from the space station will then launch the final three mini-satellites into orbit in May.

The satellite can survive from three to 24 months, orbiting Earth at a speed of eight kilometres per second, according to the team.

Violet will disintegrate into the atmosphere after finishing its mission.

“There’s no way to get it back,” said Lydon.

 

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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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