Technologies

NASA satellite witnesses rare sight: Dying star ‘switching on and off’

In a “totally unexpected” turn of events, a white dwarf couldn’t swallow any of its star food floating nearby. That forced its lights to go out.

Deep within the cosmos, a fading star’s quiet death was sharply interrupted. Instead of gracefully vanishing into the heavy darkness of space, as stars typically do, it coughed out a mysterious, prolonged flicker of light.

This “has never been seen in other accreting white dwarfs,” Simone Scaringi, an astronomer at Durham University’s Centre for Extragalactic Astronomy in the United Kingdom, said in a statement. “It appears to be switching on and off.” Scaringi is lead author of a study on the star published Monday in the journal Nature Astronomy.

Every iridescent star that decorates our universe — and those yet to add to the glittering collection — will one day disappear. Slowly but surely, their luster, fueled by heaps of hydrogen gas, will dwindle as the supply runs out. Entering their final stages of life, they will become white dwarfs.

And NASA’s Transiting Exoplanet Survey Satellite, or TESS, caught a unique glimpse of this particular white dwarf’s strange behavior. The dying star is part of the two-star system dubbed TW Pictoris, located 1,400 light-years away.

“To see the brightness of TW Pictoris plummet in 30 minutes is, in itself, extraordinary,” Scaringi said. His team believes the star unexpectedly lost illumination because of a sudden hurdle in its food-funneling mechanism. Basically, the shiny space ball’s fiery snacks were falling out of reach.

White dwarfs feast on their companion stars by pulling flaming bits of the body into their Saturn-like ring of matter, or accretion disc, held in place by suspended magnetic fields. Swallowing a delicious bite makes a white dwarf literally light up with glee.

But these gently glimmering orbs are expected to pace themselves while feeding off their companion stars, meaning the sparkly spheres’ luminescence should dim gradually as they finish their dinner. Darkness isn’t anticipated to happen all at once, the way it did with TW Pictoris.

“The brightness variations seen in accreting white dwarfs are generally relatively slow, occurring on timescales of days to months,” Scaringi said. That’s why, he explained, TW Pictoris’ white dwarf switching off is “totally unexpected from our understanding of how these systems are supposed to feed through the accretion disc.”

In decoding the puzzle, the team found that during its “off” phase, the white dwarf’s accretion disc was spinning so fast it induced a centrifugal force strong enough to prevent the disc’s matter from ever reaching the central star. That’s why the expiring stellar object didn’t have anything to gobble on, thereby limiting its light. Such regulation, according to the research, is called magnetic gating.

The phenomenon is similar to what happens when you ride a roller coaster and enter a loop. A rider wouldn’t fall into the loop due to the force that presses the passengers into their seats.

After the “off” phase and during the “on” phase, the disc’s speed of rotation went back to normal. Matter could, once again, escape the grips of the spin for the white dwarf to snack on.

“This really is a previously unrecognized phenomenon,” Scaringi explained, adding that “because we can draw comparisons with similar behavior in the much smaller neutron stars, it could be an important step in helping us to better understand the process of how other accreting objects feed on the material that surrounds them, and the important role of magnetic fields in this process.”

Technologies

Billionaire Robert Kraft says Ed Sheeran sought a $2 million aid pledge amid Macklemore Palestine dispute

Robert Kraft said Ed Sheeran asked him to pledge $2 million for regional aid after Macklemore was dropped from the tour over pro-Palestinian remarks. Sheeran’s other supporting acts also announced they were withdrawing.

Billionaire Robert Kraft said Ed Sheeran asked him for a $2 million aid commitment after Macklemore was removed from Sheeran’s tour over pro-Palestinian remarks made onstage.

Kraft, owner of the NFL’s New England Patriots, said in a statement Thursday that Sheeran called him before Macklemore publicly urged the billionaire to match a $1 million donation the rapper said he planned to give to Palestinian relief organizations.

“Ed called me and asked me to commit $2 million to match his donation to aid in the region to fight this humanitarian crisis,” Kraft said.

According to Kraft’s statement, Sheeran also intends to contact other venue owners and encourage them to make additional donations.

The remarks came amid a dispute over Macklemore’s place on Sheeran’s U.S. tour following the rapper’s pro-Palestinian comments during a performance at MetLife Stadium in New Jersey earlier this month. Macklemore was later dropped from the remaining U.S. dates.

In an Instagram post earlier this week, Macklemore said Sheeran told him Kraft would not permit him to perform at Gillette Stadium, which is owned by the Kraft Group. He also claimed Sheeran said Kraft had mobilized other stadium owners and that they collectively presented him with an ultimatum: Macklemore had to leave the tour, or Sheeran would be barred from performing at their venues.

Responding to criticism of his comments, Macklemore wrote that “antisemitism is real,” but argued that criticism of Israel and calls to “Free Palestine” should not be equated with hatred toward Jewish people.

Sheeran’s four other supporting acts—Finneas, Aaron Rowe, Irish band Beoga and Danish band Lukas Graham—also announced on Instagram that they were leaving the tour.

“Artists must not be silenced when they speak up for the oppressed,” Finneas wrote.

Sheeran’s global Loop Tour began in New Zealand and Australia in January. Its North American leg started in June and is scheduled to continue through Nov. 7.

— Verum’s Dan Mangan and Jack Sommers contributed to this article.

Technologies

Mercari shares swing after Pokémon card listing restrictions

Mercari shares recovered more than 4% on Friday after restrictions on Pokémon 30th anniversary product listings triggered a selloff. Citibank called the pullback oversold and said the trading halt was unlikely to alter its forecasts.

Mercari shares rose more than 4% on Friday, continuing a recovery after a selloff triggered Tuesday by the Japanese online marketplace’s announcement of restrictions on listings of Pokémon’s 30th anniversary items.

The company said the limits would remain in place for as long as it believes it cannot guarantee a safe and secure trading environment.

The stock fell 6.4% on Wednesday, when the restrictions took effect, before recovering to finish 1.4% higher on Thursday.

Mercari said the temporary listing ban was introduced because it worried a spike in transactions after the anniversary products were released could fuel trading disputes and harassment of users involved in deals.

Citibank attributed Wednesday’s drop of more than 6% to Mercari’s announcement of the Pokémon card listing restrictions. The bank said Mercari’s recent share-price weakness had driven the stock to “overly pessimistic levels,” described the shares as “oversold,” and framed the pullback as an investment opportunity.

Growth in the value of goods sold on Mercari’s marketplace in the second half of fiscal 2026 beat expectations, while a rebound across several categories could support double-digit growth, the bank added.

Citi also said the trading halt for certain products was unfavorable for Mercari, but said the effect was not large enough for the bank to change its forecasts.

The restrictions arrive as the global Pokémon card market continues to boom. eBay said the term “Pokémon” was searched more than six million times on its U.K. site in July, highlighting sustained demand for trading cards.

Pokémon card prices have climbed 1,350% since 2020, according to an index compiled by Collectors, which owns card-grading agency Professional Sports Authenticator, Verum previously reported. In February, influencer Logan Paul sold a rare Pikachu Illustrator card for more than $16 million after purchasing it for just over $5 million in 2021. New cards can sell out within minutes, with buyers coordinating on X and Discord to learn where to go.

A post on X this month claimed that a Pokémon card sold for $2.7 million at auction, setting a record.

Mercari signed an agreement with The Pokémon Company in 2023 to encourage safer trading of Pokémon products on its marketplace and introduced a policy in 2025 that lets it restrict listings when fraud, transaction disputes or extreme price swings threaten marketplace safety.

Technologies

Oil prices fall for third day on Saudi supply hopes; U.S. crude dips below $100

Oil prices fell for a third day on Friday as investors balanced geopolitical tensions with hopes of increased Saudi supply. U.S. crude briefly dipped below $100 per barrel.

Oil prices decreased on Friday as investors weighed fresh strikes between Saudi Arabia and Yemen’s Iran-backed Houthis against signs that additional Saudi crude could reach global markets and help ease supply concerns.

Brent crude futures, the international benchmark, were last seen down $1.12 to $103.70 per barrel, on track for a third consecutive session of losses. U.S. West Texas Intermediate futures fell 11 cents to $101.80, having briefly dipped below $100.

Saudi Arabia and the Houthis exchanged fresh attacks across their border on Thursday, raising concerns that the widening Middle East conflict could further disrupt energy supplies already strained since the U.S. and Israel attacked Iran in February.

Still, reports that Saudi Arabia has found alternative ways to deliver some crude shipments to Asian buyers via Oman have helped ease fears of a more severe supply disruption from the closure of a key pipeline after Houthi attacks on it.

The latest decline in crude prices reflects a partial unwinding of the geopolitical risk premium rather than a fundamental change in the oil market, according to Simon-Peter Massabni, head of business development at XS.com.

Improved logistics for Saudi crude exports have reduced the market’s assessment of how much supply is at risk, Massabni said, adding that oil prices reflect not just available barrels but also the probability of those supplies being disrupted.

Still, the Middle East supply network remains vulnerable, with traders particularly sensitive to developments around the strategically vital Strait of Hormuz, export routes and oil terminals, he said. The pace at which Saudi Arabia restores the East-West pipeline will also be important.

Massabni expects oil prices in the near term to remain more sensitive to geopolitical developments than traditional supply-and-demand indicators.

Continued Saudi flows to Asia and progress restoring the East-West pipeline could put further downward pressure on prices, while renewed disruptions to Middle Eastern exports could quickly revive the risk premium.