STOCKHOLM: Canadian-American cosmologist James Peebles and Swiss astronomers Michel Mayor and Didier Queloz on Tuesday won the Nobel Physics Prize for research that increases the understanding of our place in the universe.
Peebles won one-half of the prize “for theoretical discoveries that have contributed to our understanding of how the universe evolved after the Big Bang,” professor Goran Hansson, secretary general of the Royal Swedish Academy of Sciences, told a press conference.
Mayor and Queloz shared the other half for the first discovery, in October 1995, of a planet outside our solar system — an exoplanet — orbiting a solar-type star in the Milky Way.
“Their discoveries have forever changed our conceptions of the world,” the jury said.
Developed over two decades since the mid-1960s, Peebles’ theoretical framework is “the basis of our contemporary ideas about the Universe.”
Peebles built upon Albert Einstein’s work on the origins of the Universe by looking back to the millenia immediately after the Big Bang, when light rays started to shoot outwards into space.
Using theoretical tools and calculations, he drew a link between the temperature of the radiation emitted after the Big Bang and the amount of matter it created.
His work showed that the matter known to us — such as stars, planets, and ourselves — only make up five percent, while the other 95 are made up of “unknown dark matter and dark energy.”
“This is a mystery and a challenge to modern physics,” the academy said.
Peebles is Albert Einstein Professor of Science at Princeton University in the United States, while Mayor and Queloz are both professors at the University of Geneva. Queloz also works at the University of Cambridge in Britain.
Using custom-made instruments at their observatory in southern France in October 1995, Mayor and Queloz were able to detect a gaseous ball similar in size to Jupiter, orbiting a star around 50 light years from our own Sun.
Harnessing a phenomenon known as the Doppler effect, which changes the color of light depending on whether an object is approaching or retreating from Earth, the pair proved the planet, known as 51 Pegasus b, was orbiting its star.
The Nobel jury noted that the discovery “started a revolution in astronomy” and since then over 4,000 exoplanets have been found in our home galaxy.
“Strange new worlds are still being discovered,” challenging our preconceived ideas about planetary systems and “forcing scientists to revise their theories of the physical processes behind the origins of planets.”
In a statement, the two astronomers hailed their win as “simply extraordinary,” saying the discovery was “the most exciting of our careers.”
The prize consists of a gold medal, a diploma and the sum of nine million Swedish kronor (about $914,000 or 833,000 euros).
The trio will receive the prize from King Carl XVI Gustaf at a formal ceremony in Stockholm on December 10, the anniversary of the 1896 death of scientist Alfred Nobel who created the prizes in his last will and testament.
In 2018, the honor went to Arthur Ashkin of the US, Gerard Mourou of France and Donna Strickland of the US for laser inventions used for advanced precision instruments in corrective eye surgery and in industry.
This year’s Nobel prize season kicked off on Monday with the Medicine Prize awarded to Americans William Kaelin and Gregg Semenza, and Britain’s Peter Ratcliffe.
They were honored for research into how human cells sense and adapt to changing oxygen levels, which opens up new strategies to fight such diseases as cancer and anaemia.
The winners of this year’s Chemistry Prize will be announced on Wednesday.
The Literature Prize will follow on Thursday, with two laureates to be crowned after a sexual harassment scandal forced the Swedish Academy to postpone the 2018 award, for the first time in 70 years.
On Friday the action moves to Norway where the Peace Prize is awarded, with bookies predicting a win for Swedish teen climate activist Greta Thunberg on betting sites such as Ladbrokes.
The Economics Prize will wrap up the Nobel prize season on Monday, October 14.
Nobel Physics Prize honors dark matter and exoplanets
Nobel Physics Prize honors dark matter and exoplanets
- The prize consists of a gold medal, a diploma and the sum of $914,000
- The Economics Prize will wrap up the Nobel prize season on Monday
Zelensky hails Usyk victory over Fury
RIYADH: Ukrainian President Volodymyr Zelensky hailed Oleksandr Usyk’s victory over Tyson Fury in their heavyweight world championship rematch on Saturday, calling it proof that Ukraine “will not give up what’s ours.”
“Victory!” Zelensky said in a post on Telegram. “So important and so necessary for all of us now.”
Ukraine remains locked in war nearly three years after Russia invaded, but Zelensky said Usyk’s triumph was a mark of Ukrainian resiliency and determination.
“Having retained the championship belts, Oleksandr proves: we are Ukrainians and we will not give up what’s ours. And no matter how difficult it is — we will win.
“Be it the ring, battlefield or diplomatic arena — we fight and we will not give up what’s ours.
“Congrats on the victory, Cossack! Congrats on the victory Ukraine! Glory to Ukraine.”
Usyk’s victory — seven months after his first triumph over Britain’s Fury to become the first undisputed heavyweight world champion of the four-belt era — took his record to 23-0 with 14 knockouts.
Weightlifting Taiwan granny, 90, garners cheers, health benefits at gym
TAIPEI: Cheng Chen Chin-Mei beamed broadly as she hoisted a 35-kg weightlifting bar to her waist, dropped it and waved confidently to the enthusiastic crowd in a competition in Taipei. Cheng Chen, 90, has been pumping iron since last year, encouraged by her granddaughter to take up the sport after she was diagnosed with Parkinson’s disease. She credits the regimen with helping to fix her posture.
Three generations of her family were among a couple of hundred people watching Cheng Chen and 44 others aged 70 or over in a weightlifting competition on Saturday. In the three-round competition, Cheng Chen lifted as much as 45kg using a hexagonal-shaped bar that is said to allow the lifter more stability and options for gripping.
“I want to tell all the old people to join the workout,” Cheng Chen told Reuters after the competition. “You don’t need to work extremely hard, but this is to stay healthy.”
Cheng Chen was not the only nonagenarian in the competition. The oldest participant is 92.
Taiwan is projected to become a “super-aged society” next year, with 20 percent or more of its 23 million people aged 65 or older, according to National Development Council data.
The government has set up fitness centers across the island with equipment suitable for older people, to encourage them to train, according to the Health Promotion Administration, which encourages healthy lifestyles.
Santa and Mrs. Claus use military transports to bring Christmas to an Alaska Native village
- Operation Santa started in 1956 when flooding severely curtailed subsistence hunting for residents of St. Mary’s, in western Alaska
YAKUTAT, Alaska: Forget the open-air sleigh overloaded with gifts and powered by flying reindeer.
Santa and Mrs. Claus this week took supersized rides to southeast Alaska in a C-17 military cargo plane and a camouflaged Humvee, as they delivered toys to the Tlingit village of Yakutat, northwest of Juneau.
The visit was part of this year’s Operation Santa Claus, an outreach program of the Alaska National Guard to largely Indigenous communities in the nation’s largest state. Each year, the Guard picks a village that has suffered recent hardship — in Yakutat’s case, a massive snowfall that threatened to buckle buildings in 2022.
“This is one of the funnest things we get to do, and this is a proud moment for the National Guard,” Maj. Gen. Torrence Saxe, adjutant general of the Alaska National Guard, said Wednesday.
Saxe wore a Guard uniform and a Santa hat that stretched his unit’s dress regulations.
The Humvee caused a stir when it entered the school parking lot, and a buzz of “It’s Santa! It’s Santa!” pierced the cold air as dozens of elementary school children gathered outside.
In the school, Mrs. Claus read a Christmas story about the reindeer Dasher. The couple in red then sat for photos with nearly all of the 75 or so students and handed out new backpacks filled with gifts, books, snacks and school supplies donated by the Salvation Army. The school provided lunch, and a local restaurant provided the ice cream and toppings for a sundae bar.
Student Thomas Henry, 10, said while the contents of the backpack were “pretty good,” his favorite item was a plastic dinosaur.
Another, 9-year-old Mackenzie Ross, held her new plush seal toy as she walked around the school gym.
“I think it’s special that I have this opportunity to be here today because I’ve never experienced this before,” she said.
Yakutat, a Tlingit village of about 600 residents, is in the lowlands of the Gulf of Alaska, at the top of Alaska’s panhandle. Nearby is the Hubbard Glacier, a frequent stop for cruise ships.
Some of the National Guard members who visited Yakutat on Wednesday were also there in January 2022, when storms dumped about 6 feet (1.8 meters) of snow in a matter of days, damaging buildings.
Operation Santa started in 1956 when flooding severely curtailed subsistence hunting for residents of St. Mary’s, in western Alaska. Having to spend their money on food, they had little left for Christmas presents, so the military stepped in.
This year, visits were planned to two other communities hit by flooding. Santa’s visit to Circle, in northeastern Alaska, went off without a hitch. Severe weather prevented a visit to Crooked Creek, in the southwestern part of the state, but Christmas was saved when the gifts were delivered there Nov. 16.
“We tend to visit rural communities where it is very isolated,” said Jenni Ragland, service extension director with the Salvation Army Alaska Division. “A lot of kids haven’t traveled to big cities where we typically have Santa and big stores with Christmas gifts and Christmas trees, so we kind of bring the Christmas program on the road.”
After the C-17 Globemaster III landed in Yakutat, it quickly returned to Joint Base Elmendorf-Richardson in Anchorage, an hour away, because there was nowhere to park it at the village’s tiny airport. Later it returned to pick up the Christmas crew.
Santa and Mrs. Claus, along with their tuckered elves, were seen nodding off on the flight back.
Scientists observe ‘negative time’ in quantum experiments
- The researchers emphasize that these perplexing results highlight a peculiar quirk of quantum mechanics rather than a radical shift in our understanding of time
TORONTO, Canada: Scientists have long known that light can sometimes appear to exit a material before entering it — an effect dismissed as an illusion caused by how waves are distorted by matter.
Now, researchers at the University of Toronto, through innovative quantum experiments, say they have demonstrated that “negative time” isn’t just a theoretical idea — it exists in a tangible, physical sense, deserving closer scrutiny.
The findings, yet to be published in a peer-reviewed journal, have attracted both global attention and skepticism.
The researchers emphasize that these perplexing results highlight a peculiar quirk of quantum mechanics rather than a radical shift in our understanding of time.
“This is tough stuff, even for us to talk about with other physicists. We get misunderstood all the time,” said Aephraim Steinberg, a University of Toronto professor specializing in experimental quantum physics.
While the term “negative time” might sound like a concept lifted from science fiction, Steinberg defends its use, hoping it will spark deeper discussions about the mysteries of quantum physics.
Years ago, the team began exploring interactions between light and matter.
When light particles, or photons, pass through atoms, some are absorbed by the atoms and later re-emitted. This interaction changes the atoms, temporarily putting them in a higher-energy or “excited” state before they return to normal.
In research led by Daniela Angulo, the team set out to measure how long these atoms stayed in their excited state. “That time turned out to be negative,” Steinberg explained — meaning a duration less than zero.
To visualize this concept, imagine cars entering a tunnel: before the experiment, physicists recognized that while the average entry time for a thousand cars might be, for example, noon, the first cars could exit a little sooner, say 11:59 am. This result was previously dismissed as meaningless.
What Angulo and colleagues demonstrated was akin to measuring carbon monoxide levels in the tunnel after the first few cars emerged and finding that the readings had a minus sign in front of them.
The experiments, conducted in a cluttered basement laboratory bristling with wires and aluminum-wrapped devices, took over two years to optimize. The lasers used had to be carefully calibrated to avoid distorting the results.
Still, Steinberg and Angulo are quick to clarify: no one is claiming time travel is a possibility. “We don’t want to say anything traveled backward in time,” Steinberg said. “That’s a misinterpretation.”
The explanation lies in quantum mechanics, where particles like photons behave in fuzzy, probabilistic ways rather than following strict rules.
Instead of adhering to a fixed timeline for absorption and re-emission, these interactions occur across a spectrum of possible durations — some of which defy everyday intuition.
Critically, the researchers say, this doesn’t violate Einstein’s theory of special relativity, which dictates that nothing can travel faster than light. These photons carried no information, sidestepping any cosmic speed limits.
The concept of “negative time” has drawn both fascination and skepticism, particularly from prominent voices in the scientific community.
German theoretical physicist Sabine Hossenfelder, for one, criticized the work in a YouTube video viewed by over 250,000 people, noting, “The negative time in this experiment has nothing to do with the passage of time — it’s just a way to describe how photons travel through a medium and how their phases shift.”
Angulo and Steinberg pushed back, arguing that their research addresses crucial gaps in understanding why light doesn’t always travel at a constant speed.
Steinberg acknowledged the controversy surrounding their paper’s provocative headline but pointed out that no serious scientist has challenged the experimental results.
“We’ve made our choice about what we think is a fruitful way to describe the results,” he said, adding that while practical applications remain elusive, the findings open new avenues for exploring quantum phenomena.
“I’ll be honest, I don’t currently have a path from what we’ve been looking at toward applications,” he admitted. “We’re going to keep thinking about it, but I don’t want to get people’s hopes up.”
‘Don’t hit him too hard!’: Zelensky tells Usyk not to endanger British arms deal
- Ukraine President Volodymyr Zelensky jokes for Oleksandr Usyk to be gentle with British rival Tyson Fury to not harm UK weapon supplies
PARIS: Ukraine President Volodymyr Zelensky pleaded with boxing star Oleksandr Usyk to be gentle with British rival Tyson Fury in their world heavyweight clash in case a battering delivers a knockout blow to a crucial arms deal.
Usyk defeated Fury in May to become the undisputed heavyweight champion of the world and the two men meet again in Riyadh on Saturday.
“All Ukrainians are on your side. Of course, Britain is helping Ukraine in a fight against Russia,” Zelensky told Usyk on Friday in a video on Zelensky’s Telegram account.
“We respect our partners. That’s why when you beat Fury, don’t hit him too hard, because we don’t want them to ban Storm Shadow.”
British media reported last month that Ukraine had fired Storm Shadow missiles into Russia for the first time after London gave Kyiv the green light for such strikes.
The UK government refused to confirm or deny the reports.
