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This UBC grad has discovered thousands of likely planets across our cosmos

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At 30 years old, Michelle Kunimoto already has more than 3,000 planet candidates under her belt.

Inspired by science fiction and curiosity, the University of British Columbia astronomy graduate is passionate about searching for exoplanets — bodies orbiting stars outside our own solar system.

She’s currently leading a team at the Massachusetts Institute of Technology (MIT) hunting for them. In 2024, Kunimoto will return to her alma mater as an assistant professor in UBC’s department of physics and astronomy.

“She is an excellent exoplanet hunter,” said UBC astrophysicist Jaymie Matthews of his former student. “Twenty years from now, Michelle Kunimoto will be a big name in exoplanets.

“When she started, the only science she knew was Star Trek. Now she is the real Spock.”

Kunimoto, of Abbotsford, B.C., told CBC News about her dream of discovering a habitable planet, one that could potentially host life in what’s nicknamed the “Goldilocks zone” where atmospheric conditions are just right.

 

UBC graduate discovers more than 3,000 likely planets

 

Astronomer Michelle Kunimoto explains how she uses data from NASA’s transiting exoplanet survey satellite to detect likely planets orbiting distant stars many light years away. The 30-year-old University of B.C. graduate has discovered more than 3,000 planetary candidates, and is set to join her alma mater’s astronomy faculty in 2024.

This interview has been edited for length and clarity.

How do you find planets?

I use what’s known as the transit method.

The basic idea is as a planet’s orbiting around a star it might pass in front of that star and block a little bit of its light.

We have a telescope that’s looking at the star, and measuring how bright it is over time. If we see a temporary decrease in the brightness of that star, that could be a planet blocking its light as it passes by.

And if this happens to repeat, let’s say every year, then that’s a good indication it’s a planet that takes a year to orbit that star.

Where do you get your data?

I use data from NASA’s Transiting Exoplanet Survey Satellite, or TESS mission…. It’s a telescope that’s up in space right now, looking at tens of millions of stars every month, measuring their brightness.

Two technicians in white protective sterile full-body suits work on a satellite in an indoor laboratory.
Technicians work to prepare NASA’s Transiting Exoplanet Survey Satellite (TESS) prior to its launch in 2018. TESS has led to the discovery of hundreds of confirmed exoplanets. (Submitted by Orbital ATK/NASA Goddard Space Flight Center/CI Lab)

So how many exoplanets have you discovered?

I have found over 3,000 candidates at this point, and the TESS mission itself has found just over 7,000.

It’s been the highlight of the work I’ve been doing.

What has to happen next to verify that they’re planets?

To confirm these, there’s typically a lot of work that has to be done.

Once we find a really good indication that we’ve got a planet, there’s followup from people around the world, and then you write a paper to describe all the results. That can take years of work.

At this point, about 56 of our candidates have been officially confirmed.

Could any of these planets host life?

The TESS mission has found two candidates right now that are potentially habitable, and similar to the size of the Earth. I was able to help identify those.

I’m still looking. That’s definitely a focus of my work.

Exoplanet names usually just have letters and numbers — but if you could name one planet, what would it be?

What I would do is look at the planets in science fiction — like Vulcan [from Star Trek] — and try to find the closest match of the candidates I found. Arthur C. Clarke [2001: A Space Odyssey] would be my favourite author from science fiction.

After finding thousands of likely planets yourself, is there one dream you have — the big ‘Eureka’ moment?

I would love to be able to find more of the potentially habitable planets … where we can eventually do things like potentially find signatures in the planet’s atmosphere that could indicate life exists on the surface of that planet.

To be directly involved with that type of research would be absolutely incredible.

What are you most looking forward to about being back at UBC?

It’s where I did both my undergrad and my PhD degrees. I love the department. I’m really looking forward to starting an exoplanet focus group at UBC,… really making UBC an attractive place for graduate students across Canada and the world to study exoplanets.

Do you have a ritual you do whenever you find a new planet? Or are you just like, ‘Oh, there’s another planet, add it to the list’?

I don’t really have a a ritual. But every one is still really exciting. I’m not tired of it.

I always try to look at what’s the most interesting thing about each of the planets I find.

There’s actually about 10 of the candidates we found so far that turned out to be among the rarest planets ever found, really giant exoplanets — the size of Jupiter — that orbit stars significantly smaller than our sun. Theory predicts that they shouldn’t exist, and yet we’ve been finding many more of them.

It reminds me why I really enjoy what I do.

An image of the milky way galaxy patched together from multiple satellite images, with only one major missing patch of the sky in the top left.
NASA’s Transiting Exoplanet Survey Satellite (TESS) searches for planets orbiting other stars. (Submitted by Ethan Kruse/University of Maryland/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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