Nine civilians killed as Russian Lancet drone targets bus in Ukraine’s Sumy region
The attack took place just hours after peace talks between Russia and Ukraine, held for the first time since 2022, ended inconclusively.
A civilian minibus was struck by a Russian drone in northeastern Ukraine on Saturday morning, killing nine people and injuring seven others. The attack took place in the town of Bilopillia in the Sumy region, as the minibus was traveling toward the regional capital near the Russian border.
The attack took place just hours after peace talks between the two warring nations, held in Turkey for the first time since 2022, ended inconclusively. According to local officials, the bus was struck by at least one Lancet drone and killed mostly elderly women.
Zelensky condemns drone strike after Russia-Ukraine talks
Ukrainian President Volodymyr Zelensky condemned the drone strike as a deliberate killing of civilians. He added that the “Russians could not have failed to understand what kind of vehicle they were targeting.” Meanwhile, Russia has not officially responded to the strike, though state media claimed that its forces targeted a military staging area in Sumy, BBC reports.
“There are currently seven wounded people in hospitals following a Russian drone strike on an ordinary passenger bus. The victims have suffered burns, fractures, and blast injuries. All of them are receiving the necessary medical assistance,” Zelensky wrote in a statement on X. He reiterated the country’s offer of “full and unconditional ceasefire in order to save lives”, adding “Russia retains nothing but the ability to continue killing.”
Images from the attack showed the destroyed bus on a rural road, its roof torn off by the blast. The vehicle was headed toward Sumy around 6:00 am when it was “targeted by the Russians,” according to the regional military administration.
The attack underscored the deep challenges facing the fragile ceasefire discussions, as Russian officials added new conditions for any future negotiations to proceed. Earlier in the week, Moscow launched drone strikes across the region, killing three and injuring nine.
On Saturday, Ukrainian drones reportedly hit an ammunition depot in Russian-occupied Crimea, triggering explosions in warehouses storing weapons, equipment, and fuel.
Upgraded suicide drone used in latest attack
The drones that were used in the latest attack are reportedly upgraded Lancet suicide drones, known as the ‘Izdeliye-53‘, which feature autonomous navigation systems capable of recognizing different types of targets. According to a report by the US-based Institute for the Study of War (ISW), the new model uses automatic guidance technology to improve strike accuracy and success rates.
The Lancet drone is estimated to carry a payload of between 6 to 11 pounds (3 to 5 kilograms), which is lighter than other suicide drones Russia imports from Iran. Despite its smaller payload, the Lancet remains highly effective thanks to its precision and advanced targeting systems.
The Russian Lancet strikes also depend on intelligence from nearby reconnaissance drones providing a first-person view. Ukraine’s National Police condemned the attack on Telegram, calling it “more than just shelling but a cynical war crime.”
Since the start of the Russia-Ukraine conflict in February 2022, the Kremlin has heavily utilized suicide drones, also known as ‘kamikaze‘ drones, as a central part of its military tactics. These drones are relatively low-cost and simple to produce, enabling mass deployment. They can target a wide range of battlefield assets, including tanks, artillery, and personnel, making them a flexible and persistent threat.
When quarks misbehave, symmetry breaks down and changes the rules of physics
Scientists experimenting at the Thomas Jefferson National Accelerator Facility in Virginia observed unusual up quark and down quark behavior, suggesting that charge symmetry doesn’t always hold, at least not during fragmentation.
For decades, physicists have relied on the principle of symmetry to simplify and understand the complex behaviors of subatomic particles. Symmetry in physics basically means that some rules of nature stay the same even if you change things around.
This idea has served as one of the foundations of nuclear physics, helping scientists build models of how matter behaves at the smallest scales. However, a team of researchers led by Mississippi State University (MSU) professor Dipangkar Dutta has found cracks in this foundation.
Results from the new study suggest that symmetry, once thought to be a constant, can break down under certain conditions. This finding can reshape our understanding of the strong nuclear force, a force that governs everything from the behavior of particles inside atomic nuclei to the formation of matter across the universe.
An experiment that defies symmetry
To test whether certain symmetries in physics really hold up, the researchers conducted an interesting experiment at the Thomas Jefferson National Accelerator Facility in Virginia. They used a high-energy beam of electrons and fired it at protons and deuterons (a hydrogen isotope).
This allowed them to observe how quarks, the tiny building blocks inside protons and neutrons (inside the deuteron), behave when struck. The technique the scientists used is called semi-inclusive deep-inelastic scattering (or SIDIS). In simple terms, it’s a way to knock loose a quark and then study what kind of particle it turns into afterward.
The researchers focused on how often quarks turned into positively or negatively charged pions (a type of subatomic particle), depending on whether they came from protons or deuterons. This process, called fragmentation, gives physicists clues about how quarks behave when they’re released from the tight grip of the strong nuclear force.
Now here’s where the symmetry jumps in. According to a principle called charge symmetry, an up quark in a proton should behave the same way as a down quark in a neutron, once you flip the charge. That’s been a helpful assumption for decades because it simplifies calculations.
However, until now, this idea hadn’t been tested carefully in the context of fragmentation. When the researchers compared the behavior of these quarks, they found small but clear deviations, especially at lower energy levels.
These deviations caused the symmetry between the behaviors of up and down quarks to break down, suggesting that charge symmetry doesn’t always hold, at least not during fragmentation.
Time to make new changes in existing theories
The possibility of symmetry failing under certain conditions can lead to many changes in nuclear physics. For instance, by understanding where and why symmetries break down, scientists can reevaluate theoretical models and more accurately explain particle behavior and interactions.
“The assumptions we make based on symmetries greatly simplify our analyses. But they haven’t been tested quantitatively with precision until now. Our new results show when the symmetries are valid and when they need certain corrections,” said Dutta, in a statement released by MSU.
Hopefully, future studies will also shed light on other scenarios where symmetries break and lead to an improved understanding of nuclear physics.
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Nine civilians killed as Russian Lancet drone targets bus in Ukraine’s Sumy region
The attack took place just hours after peace talks between Russia and Ukraine, held for the first time since 2022, ended inconclusively.
A civilian minibus was struck by a Russian drone in northeastern Ukraine on Saturday morning, killing nine people and injuring seven others. The attack took place in the town of Bilopillia in the Sumy region, as the minibus was traveling toward the regional capital near the Russian border.
The attack took place just hours after peace talks between the two warring nations, held in Turkey for the first time since 2022, ended inconclusively. According to local officials, the bus was struck by at least one Lancet drone and killed mostly elderly women.
Zelensky condemns drone strike after Russia-Ukraine talks
Ukrainian President Volodymyr Zelensky condemned the drone strike as a deliberate killing of civilians. He added that the “Russians could not have failed to understand what kind of vehicle they were targeting.” Meanwhile, Russia has not officially responded to the strike, though state media claimed that its forces targeted a military staging area in Sumy, BBC reports.
“There are currently seven wounded people in hospitals following a Russian drone strike on an ordinary passenger bus. The victims have suffered burns, fractures, and blast injuries. All of them are receiving the necessary medical assistance,” Zelensky wrote in a statement on X. He reiterated the country’s offer of “full and unconditional ceasefire in order to save lives”, adding “Russia retains nothing but the ability to continue killing.”
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Images from the attack showed the destroyed bus on a rural road, its roof torn off by the blast. The vehicle was headed toward Sumy around 6:00 am when it was “targeted by the Russians,” according to the regional military administration.
The attack underscored the deep challenges facing the fragile ceasefire discussions, as Russian officials added new conditions for any future negotiations to proceed. Earlier in the week, Moscow launched drone strikes across the region, killing three and injuring nine.
On Saturday, Ukrainian drones reportedly hit an ammunition depot in Russian-occupied Crimea, triggering explosions in warehouses storing weapons, equipment, and fuel.
!summarize #media #joebiden #president #coverup
Upgraded suicide drone used in latest attack
The drones that were used in the latest attack are reportedly upgraded Lancet suicide drones, known as the ‘Izdeliye-53‘, which feature autonomous navigation systems capable of recognizing different types of targets. According to a report by the US-based Institute for the Study of War (ISW), the new model uses automatic guidance technology to improve strike accuracy and success rates.
The Lancet drone is estimated to carry a payload of between 6 to 11 pounds (3 to 5 kilograms), which is lighter than other suicide drones Russia imports from Iran. Despite its smaller payload, the Lancet remains highly effective thanks to its precision and advanced targeting systems.
!summarize #drone #ukraine #military #technology #russia #war
The Russian Lancet strikes also depend on intelligence from nearby reconnaissance drones providing a first-person view. Ukraine’s National Police condemned the attack on Telegram, calling it “more than just shelling but a cynical war crime.”
Since the start of the Russia-Ukraine conflict in February 2022, the Kremlin has heavily utilized suicide drones, also known as ‘kamikaze‘ drones, as a central part of its military tactics. These drones are relatively low-cost and simple to produce, enabling mass deployment. They can target a wide range of battlefield assets, including tanks, artillery, and personnel, making them a flexible and persistent threat.
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When quarks misbehave, symmetry breaks down and changes the rules of physics
Scientists experimenting at the Thomas Jefferson National Accelerator Facility in Virginia observed unusual up quark and down quark behavior, suggesting that charge symmetry doesn’t always hold, at least not during fragmentation.
For decades, physicists have relied on the principle of symmetry to simplify and understand the complex behaviors of subatomic particles. Symmetry in physics basically means that some rules of nature stay the same even if you change things around.
This idea has served as one of the foundations of nuclear physics, helping scientists build models of how matter behaves at the smallest scales. However, a team of researchers led by Mississippi State University (MSU) professor Dipangkar Dutta has found cracks in this foundation.
Results from the new study suggest that symmetry, once thought to be a constant, can break down under certain conditions. This finding can reshape our understanding of the strong nuclear force, a force that governs everything from the behavior of particles inside atomic nuclei to the formation of matter across the universe.
An experiment that defies symmetry
To test whether certain symmetries in physics really hold up, the researchers conducted an interesting experiment at the Thomas Jefferson National Accelerator Facility in Virginia. They used a high-energy beam of electrons and fired it at protons and deuterons (a hydrogen isotope).
This allowed them to observe how quarks, the tiny building blocks inside protons and neutrons (inside the deuteron), behave when struck. The technique the scientists used is called semi-inclusive deep-inelastic scattering (or SIDIS). In simple terms, it’s a way to knock loose a quark and then study what kind of particle it turns into afterward.
The researchers focused on how often quarks turned into positively or negatively charged pions (a type of subatomic particle), depending on whether they came from protons or deuterons. This process, called fragmentation, gives physicists clues about how quarks behave when they’re released from the tight grip of the strong nuclear force.
Now here’s where the symmetry jumps in. According to a principle called charge symmetry, an up quark in a proton should behave the same way as a down quark in a neutron, once you flip the charge. That’s been a helpful assumption for decades because it simplifies calculations.
However, until now, this idea hadn’t been tested carefully in the context of fragmentation. When the researchers compared the behavior of these quarks, they found small but clear deviations, especially at lower energy levels.
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These deviations caused the symmetry between the behaviors of up and down quarks to break down, suggesting that charge symmetry doesn’t always hold, at least not during fragmentation.
Time to make new changes in existing theories
The possibility of symmetry failing under certain conditions can lead to many changes in nuclear physics. For instance, by understanding where and why symmetries break down, scientists can reevaluate theoretical models and more accurately explain particle behavior and interactions.
“The assumptions we make based on symmetries greatly simplify our analyses. But they haven’t been tested quantitatively with precision until now. Our new results show when the symmetries are valid and when they need certain corrections,” said Dutta, in a statement released by MSU.
Hopefully, future studies will also shed light on other scenarios where symmetries break and lead to an improved understanding of nuclear physics.
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