Month: July 2024

Enlarge / A jet of particles moving at nearly light-speed emerges from a massive star in this artist’s concept of the BOAT. (credit: NASA's Goddard Space Flight Center Conceptual Image Lab)

Scientists have been all aflutter since several space-based detectors picked up a powerful gamma-ray burst (GRB) in October 2022—a burst so energetic that astronomers nicknamed it the BOAT (Brightest Of All Time). Now an international team of astronomers has analyzed an unusual energy peak detected by NASA's Fermi Gamma-ray Space Telescope and concluded that it was an emission spectra, according to a new paper published in the journal Science. Per the authors, it's the first high-confidence emission line ever seen in 50 years of studying GRBs.

As reported previously, gamma-ray bursts are extremely high-energy explosions in distant galaxies lasting between mere milliseconds to several hours. There are two classes of gamma-ray bursts. Most (70 percent) are long bursts lasting more than two seconds, often with a bright afterglow. These are usually linked to galaxies with rapid star formation. Astronomers think that long bursts are tied to the deaths of massive stars collapsing to form a neutron star or black hole (or, alternatively, a newly formed magnetar). The baby black hole would produce jets of highly energetic particles moving near the speed of light, powerful enough to pierce through the remains of the progenitor star, emitting X-rays and gamma rays.

Those gamma-ray bursts lasting less than two seconds (about 30 percent) are deemed short bursts, usually emitting from regions with very little star formation. Astronomers think these gamma-ray bursts are the result of mergers between two neutron stars, or a neutron star merging with a black hole, comprising a "kilonova." That hypothesis was confirmed in 2017 when the LIGO collaboration picked up the gravitational wave signal of two neutron stars merging, accompanied by the powerful gamma-ray bursts associated with a kilonova.

Enlarge / A bad update to CrowdStrike's Falcon security software crashed millions of Windows PCs last week. (credit: CrowdStrike)

CrowdStrike CEO George Kurtz said Thursday that 97 percent of all Windows systems running its Falcon sensor software were back online, a week after an update-related outage to the corporate security software delayed flights and took down emergency response systems, among many other disruptions. The update, which caused Windows PCs to throw the dreaded Blue Screen of Death and reboot, affected about 8.5 million systems by Microsoft's count, leaving roughly 250,000 that still need to be brought back online.

Microsoft VP John Cable said in a blog post that the company has "engaged over 5,000 support engineers working 24x7" to help clean up the mess created by CrowdStrike's update and hinted at Windows changes that could help—if they don't run afoul of regulators, anyway.

"This incident shows clearly that Windows must prioritize change and innovation in the area of end-to-end resilience," wrote Cable. "These improvements must go hand in hand with ongoing improvements in security and be in close cooperation with our many partners, who also care deeply about the security of the Windows ecosystem."

Enlarge / The environment you're eating in can influence what you taste, and space is no exception. (credit: NASA)

Astronauts on the ISS tend to favor spicy foods and top other foods with things like tabasco or shrimp cocktail sauce with horseradish. “Based on anecdotal reports, they have expressed that food in space tastes less flavorful. This is the way to compensate for this,” said Grace Loke, a food scientist at the RMIT University in Melbourne, Australia.

Loke’s team did a study to take a closer look at those anecdotal reports and test if our perception of flavor really changes in an ISS-like environment. It likely does, but only some flavors are affected.

Tasting with all senses

“There are many environmental factors that could contribute to how we perceive taste, from the size of the area to the color and intensity of the lighting, the volume and type of sounds present, the way our surroundings smell, down to even the size and shape of our cutlery. Many other studies covered each of these factors in some way or another,” said Loke.

Enlarge / A digital advertisement board displaying a Barbie movie poster is seen in New York on July 24, 2023. (credit: Getty | Selcuk Acar)

This post contains spoilers—for the movie and women's healthcare.

There's nothing like stirrups and a speculum to welcome one to womanhood, but for some, the recent Barbie movie apparently offered its own kind of eye-opening introduction.

The smash-hit film ends with the titular character making the brave decision to exit Barbieland and enter the real world as a bona fide woman. The film's final scene follows her as she fully unfurls her new reality, attending her first woman's health appointment. "I’m here to see my gynecologist," she enthusiastically states to a medical receptionist. For many, the line prompted a wry chuckle, given her unsuspecting eagerness and enigmatic anatomy. But for others, it apparently raised some fundamental questions.

Enlarge / Police observe the Eiffel Tower from Trocadero ahead of the Paris 2024 Olympic Games on July 22, 2024. (credit: Hector Vivas/Getty Images)

On the eve of the Olympics opening ceremony, Paris is a city swamped in security. Forty thousand barriers divide the French capital. Packs of police officers wearing stab vests patrol pretty, cobbled streets. The river Seine is out of bounds to anyone who has not already been vetted and issued a personal QR code. Khaki-clad soldiers, present since the 2015 terrorist attacks, linger near a canal-side boulangerie, wearing berets and clutching large guns to their chests.

French interior minister Gérald Darmanin has spent the past week justifying these measures as vigilance—not overkill. France is facing the “biggest security challenge any country has ever had to organize in a time of peace,” he told reporters on Tuesday. In an interview with weekly newspaper Le Journal du Dimanche, he explained that “potentially dangerous individuals” have been caught applying to work or volunteer at the Olympics, including 257 radical Islamists, 181 members of the far left, and 95 from the far right. Yesterday, he told French news broadcaster BFM that a Russian citizen had been arrested on suspicion of plotting “large scale” acts of “destabilization” during the Games.

Parisians are still grumbling about road closures and bike lanes that abruptly end without warning, while human rights groups are denouncing “unacceptable risks to fundamental rights.” For the Games, this is nothing new. Complaints about dystopian security are almost an Olympics tradition. Previous iterations have been characterized as Lockdown London, Fortress Tokyo, and the “arms race” in Rio. This time, it is the least-visible security measures that have emerged as some of the most controversial. Security measures in Paris have been turbocharged by a new type of AI, as the city enables controversial algorithms to crawl CCTV footage of transport stations looking for threats. The system was first tested in Paris back in March at two Depeche Mode concerts.