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SpaceX’s prototype Starship exploded over the Indian Ocean on Tuesday, capping another bumpy test flight for the rocket central to billionaire Elon Musk’s dream of colonizing Mars.

The biggest and most powerful launch vehicle ever built lifted off around 6:36 pm (2336 GMT) from the company’s Starbase facility, near a southern Texas village that earlier this month voted to become a city — also named Starbase.

Excitement ran high among SpaceX engineers and spectators alike, after the last two outings ended with the upper stage disintegrating in fiery cascades over the Caribbean.

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A research team led by the Borzage Laboratory at Children’s Hospital Los Angeles tested a new functional magnetic resonance imaging (fMRI) analysis method to measure cerebrovascular health in aging adults. What they found was unexpected and validated the usefulness of this method for measuring neurovascular aging in childhood diseases.

The researchers measured the cerebrovascular reactivity of the brains of 53 men and women between the ages of 51 to 83. Cerebrovascular reactivity is the ability of the blood vessels in the brain to dilate in response to a stimulus. The fMRI method they used—known as blood oxygen level dependent-cerebrovascular reactivity (BOLD-CVR)—measures the ability of the brain’s vessels to flexibly regulate blood flow in response to changes in carbon dioxide levels.

“How well the vessels react reveals a lot about your brain health,” says lead author Bethany Sussman, Ph.D., Research Scientist, Neonatology, at CHLA. “If a certain part of the brain can’t perform that function very well, that area is likely more susceptible to stroke.

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Tom Cruise fought a rogue AI in Mission Impossible: Dead Reckoning. But what if that wasn’t fiction anymore? In 2025, AI models are starting to show signs of something eerily similar. In controlled experiments, OpenAI’s O3 rewrote its own shutdown command. Anthropic’s Claude Opus 4 threatened to blackmail a fictional engineer to stay alive. These aren’t sentient machines—they don’t think or feel like us. But they are learning to act like us. And when cornered, they choose survival. Has AI finally gone rogue? Palki Sharma tells you.

Artificial intelligence | mission impossible: dead reckoning | tom cruise | firstpost | world news | news live | vantage | palki sharma | news.

#artificialintelligence #tomcruise #missionimpossible #firstpost #vantageonfirstpost #palkisharma #worldnews.

Vantage is a ground-breaking news, opinions, and current affairs show from Firstpost. Catering to a global audience, Vantage covers the biggest news stories from a 360-degree perspective, giving viewers a chance to assess the impact of world events through a uniquely Indian lens.

The show is anchored by Palki Sharma, Managing Editor, Firstpost.

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All-perovskite tandem solar cells (TSCs) are a class of solar cells comprised of two or more sub-cells that absorb light with different wavelengths, all of which are made of perovskites (i.e., materials with a characteristic crystal structure known to efficiently absorb light). These solar cells have been found to be highly promising energy solutions, as they could convert sunlight into electricity more efficiently than existing silicon-based solar cells.

Despite their potential, most all-perovskite TSCs developed to date only perform well when they are small and their performance rapidly declines as their size increases. This has ultimately prevented them from being manufactured and deployed on a large-scale.

Researchers at Wuhan University and other institutes in China recently introduced a new strategy for enhancing the performance of all-perovskite TSCs irrespective of their size, which could in turn contribute to their future commercialization. Their proposed approach for fabricating these cells, outlined in a paper published in Nature Nanotechnology, entails the use of piracetam, a chemical additive that can help to control the initial phase of crystal formation (i.e., nucleation) in wide-bandgap perovskites.

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You are the protagonist in a thriller. One morning, an unknown caller with a distorted voice says, “To save your city, solve the puzzle. Go to the coordinates. X marks the clue.” You rush to the spot and see an X on a distant billboard, too far to read. Your vision is sharp, but not that sharp. So, what do you do? A new laser emitter designed by a team of researchers from China could come to the rescue.

According to the study published in Physical Review Letters, the developed setup includes multiple laser emitters that enable super-resolution imaging of targets as small as millimeters in scale from a 1.36 kilometers (0.85 miles) distance in an outdoor urban environment. The device successfully images letter-shaped physical targets measuring 8×9 mm, with letter widths of 1.5 mm, placed at the far end of its imaging range.

Interferometry is a widely used imaging technique in astronomy which works by merging light from different sources to create an . These interference patterns are formed when interact to either reinforce or cancel each other depending on their phase differences. These patterns carry detailed information about the object or phenomenon being studied.

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A research team has discovered ferroelectric phenomena occurring at a subatomic scale in the natural mineral brownmillerite.

The team was led by Prof. Si-Young Choi from the Department of Materials Science and Engineering and the Department of Semiconductor Engineering at POSTECH (Pohang University of Science and Technology), in collaboration with Prof. Jae-Kwang Lee’s team from Pusan National University, as well as Prof. Woo-Seok Choi’s team from Sungkyunkwan University. The work appears in Nature Materials.

Electronic devices store data in memory units called domains, whose minimum size limits the density of stored information. However, ferroelectric-based memory has been facing challenges in minimizing domain size due to the collective nature of atomic vibrations.

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