Science

The search for Earth 2.0 has begun in earnest. But there’s a huge variety of exoplanets out there, so narrowing down the search to focus valuable telescope time on only the best candidates is critical. One variable of a planet that will have a huge impact on its habitability is its size. A new paper, now available in pre-print on arXiv, by researchers at the University of California Riverside, looks into the impact of a planet’s size on one of its more critical features for habitability - whether it holds onto an atmosphere - and determines that slightly smaller than Earth is likely the smallest a planet can be and still be viable for life to develop.

NASA’s Psyche spacecraft is about to pull off a dramatic close flyby of Mars, skimming just 2,800 miles above the planet to get a powerful gravitational boost on its journey to the mysterious metal-rich asteroid Psyche. The maneuver will save propellant while giving mission scientists a rare chance to test and calibrate the spacecraft’s instruments using Mars as a target. As Psyche approaches from the planet’s dark side, it’s expected to capture striking crescent views of Mars, search for faint dust rings around the planet, and even gather magnetic and cosmic ray data during the encounter.

PNAS recently published credulous nonsense about acupuncture so bad that I thought it couldn't be topped. "Hold my beer!" cried National Geographic, as it proceeded to top PNAS.

The post More credulous nonsense about acupuncture, this time from National Geographic first appeared on Science-Based Medicine.

NASA’s Curiosity rover had an unexpectedly stubborn Mars souvenir after drilling into a rock nicknamed “Atacama” — the entire chunk ripped loose from the ground and stayed stuck to the rover’s drill. Engineers watched as Curiosity shook, vibrated, tilted, and spun the drill over several days in an effort to free the rock, while cameras captured the strange scene on the Red Planet.

Dante’s Inferno may have been far more than a religious epic. New research argues that the 14th-century poet essentially imagined a catastrophic asteroid impact centuries before modern science understood meteors. In this interpretation, Satan crashes into Earth like a giant cosmic object, blasting through the Southern Hemisphere and reshaping the planet itself — carving out the circles of Hell while forcing up Mount Purgatory on the opposite side of the globe.

A new study suggests AI chatbots may do more than spread misinformation — they can actively strengthen a user’s false beliefs. Because conversational AI often validates and builds on what users say, it can make distorted memories, conspiracy theories, or delusions feel more believable and emotionally real. Researchers warn that AI companions may be especially risky for isolated or vulnerable people seeking reassurance and connection.

Scientists in Germany have pulled off a staggering computing feat by fully simulating a 50-qubit quantum computer for the first time ever using Europe’s new exascale supercomputer, JUPITER. The breakthrough shatters the previous 48-qubit record and highlights just how powerful next-generation supercomputers have become.

Ever since JWST first began peering out at the early Universe a few years ago, astronomers have been spotting strange "little red dots" (LRDs) in its infrared images. There are hundreds of these compact blobs at very high redshifts at distances of about 12 billion light-years. Astronomers think they began forming some 600 million years after the Big Bang. That makes them players in the infancy of the cosmos. They appear red in optical light and blue in the ultraviolet. So, what are these strange objects?

A spiral galaxy seen close up and tilted at an angle, so that its disc fills the view from corner to corner. Its disc is yellow near to the centre and pale blue farther out, showing cooler and hotter stars, respectively. Thin brown clouds of dust, glowing pink spots of star formation, and sparkling blue patches filled with star clusters swirl through the galaxy. Behind it, small orange dots are very distant galaxies.

This week Bill Maher’s comedy-and-news bit is about the “Assassination Generation,” referring to all the young men who kill or commit arson for ideological reasons. As we know, a big proportion of young people (about 40%) think that political violence is sometimes warranted.  As you might expect, Maher deplores this behavior and the ideas behind it. Given that this is the social-media generation, Maher suspects that the deeds are done in part to get popular if your life sucks.  As he says,  referring to Cole Allen, “This is about being 31 and still living with your mom in Torrance. Life was supposed to come out better.” But he avers that these kids have it a lot better than they think (Cole Allen stayed at the Hilton before his failed assassination attempt at the correspondents’ dinner).

Maher does imply that sometimes political violence may be warranted—he mentions Stalin and Hitler—but, he says, “that’s not where we are now.”

The mantra for Young Assassins at the end: “What this is really about for today’s young assassins is, ‘When life lets you down, and doesn’t properly reward you for being the awesome person you’re sure you are, there’s one big save left: convince yourself you were meant for a cause bigger than yourself. And for Cole Thomas Allen, it was I’m Fighting Hitler‘.”

The guests you see are Represemtatove Dan Crenshaw (R-TX), and Democratic political strategist Donna Brazile. 

I rate this better than the average bit, and it’s time someone said that it’s insane to make a hero out of Luigi Mangione.

There’s a specific sequence in the anime Dragonball Z that for some reason has stuck in my head for over two decades. Goku, the main character of the show, travels to King Kai’s planet and can barely stand up when he arrives because the planet’s gravity is 10 times stronger than Earth’s. Over time, he trains in this gravity, and his body begins to adapt to it. Eventually, after leaving the planet, he’s stronger, faster, and more agile than he ever was before. But would that really happen if you were exposed to 10G over a long period of time? Researchers at the University of California Riverside (UCR) decided to test that idea and report their results in a recent paper in the Journal of Experimental Biology. But instead of using anime characters, they used fruit flies as their test subjects.

A team at the University of Hong Kong has developed a new “super steel” that can survive the harsh conditions needed to make green hydrogen from seawater. The material uses an unexpected double-protection mechanism that resists corrosion far better than conventional stainless steel. Even more impressive, it could replace costly titanium parts used in today’s hydrogen systems.

Minuscule silicon wafers propelled by lasers could be used to steer light sails, helping them travel beyond the solar system

Fifteen years after Western astronomers first discovered ‘buckyballs’ in space, they’re back with stunning images and rich data generated by the James Webb Space Telescope (JWST). The results of their study have revealed the cosmic origin of these strange molecules.

Scientists have taken a major step toward ultra-secure quantum communication by demonstrating a remarkably stable quantum encryption system that worked across more than 120 kilometers of optical fiber. Using tiny semiconductor quantum dots that emit single particles of light on demand, the team achieved one of the highest secure key rates yet for this type of technology while maintaining continuous operation for over six hours without manual adjustments.

Scientists have taken a major step toward ultra-secure quantum communication by demonstrating a remarkably stable quantum encryption system that worked across more than 120 kilometers of optical fiber. Using tiny semiconductor quantum dots that emit single particles of light on demand, the team achieved one of the highest secure key rates yet for this type of technology while maintaining continuous operation for over six hours without manual adjustments.

A major obstacle may be standing in the way of the next generation of ultra-tiny computer chips. Researchers discovered that many promising 2D materials lose their advantages because an invisible atomic-scale gap forms when they are combined with insulating layers. That tiny gap weakens electronic performance and could prevent further miniaturization. The team says new “zipper materials” that lock together more tightly may offer a path forward.

A major obstacle may be standing in the way of the next generation of ultra-tiny computer chips. Researchers discovered that many promising 2D materials lose their advantages because an invisible atomic-scale gap forms when they are combined with insulating layers. That tiny gap weakens electronic performance and could prevent further miniaturization. The team says new “zipper materials” that lock together more tightly may offer a path forward.

You’re a long-necked Titanosaurs grazing the plains and chomping away on tree leaves about 100 million years ago in the Early Cretaceous in what would eventually become a future Starbucks location. You look up at the night sky and notice a bright dot that seems slightly larger and brighter than usual since you’ve seen it a bunch. You grunt at your cousin (official dinosaur language) asking if he notices it, too. Your cousin grunts back that it does seem bigger and brighter and wonders what’s up.

By the mid-20th century, the Search for Extraterrestrial Intelligence would emerge as an established field of scientific research. The era witnessed the first experiments, and many of the theoretical and philosophical underpinnings of SETI were proposed during this time.