Falling space debris poses an escalating risk as spacecraft get stronger and more heat resistant
When it comes to space debris, what goes up is coming down more often—and not safely.
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When politics enter the picture, credentials take a back seat
Most Americans know what a real expert's credentials look like: relevant degree, years of experience, and respect from peers. The problem, according to a study recently published in Scientific Reports, is that none of it matters as much once we find out their politics.
eROSITA discovers a 'changing-look' Seyfert galaxy
Astronomers have tracked a dramatic "changing-look" active galactic nucleus (AGN) whose central supermassive black hole appeared to switch off and then rapidly reignite. The galaxy, HE 1237−2252, dimmed in X-rays by a factor of 17 within just 18 months before recovering again.
Surrounded by stardust: Antarctic ice cores confirm Earth is accumulating iron-60 from local interstellar cloud
Our solar system is currently passing through the Local Interstellar Cloud, a region of highly diluted gas and dust between the stars. On its path, Earth continuously accumulates iron-60, a rare radioactive isotope of iron produced in stellar explosions. This has now been
How short-form videos may aid the teaching of small-engine maintenance
The 1974 novel "Zen and the Art of Motorcycle Maintenance" offered a simple but enduring idea: Working on machines should not be about just fixing them, but slowing down, paying attention, and reflecting on both the work and oneself in the pursuit of quality.
People overestimate how confident AI systems are in their responses, experiments reveal
Artificial intelligence (AI) systems, particularly conversational agents such as ChatGPT or Gemini, are now used daily by a growing number of people worldwide. While many users trust the answers of AI agents to their queries, these are not always accurate and reliable.
Musk wants SpaceX to go public. Here's how it works
Hundreds of companies raised a combined $70 billion by selling shares to the public in the United States last year.
New spacecraft will watch Earth's shield take the hit as solar storms come roaring in
A joint European-Chinese spacecraft is set to blast off Tuesday to investigate what happens when extreme winds and giant explosions of plasma shot out from the sun slam into Earth's magnetic shield.
We tested the new World Cup ball. This is what you need to know about how it will fly, dip and swerve
Every four years, the men's World Cup delivers some certainties. The pitch dimensions are tightly regulated, offside is signaled with a flag, and referees end the match with a blast of a whistle. But one key piece of equipment is changed on purpose: the ball.
Hidden cell networks emerge in 3D as new nanoscopy tracks living bridges
A new nanoscopy technique developed at The Australian National University (ANU) has uncovered hidden networks used for communication between cells, opening new ways to understand human diseases. Described in an article published in Nature Communications, the method allows
Neutrino flavor flips could be key to triggering supernovae
Despite being so elusive, neutrinos are produced in abundance in some of the most violent events in the universe. One of their strangest properties is that they can spontaneously switch between three types, or "flavors": a phenomenon known as neutrino oscillation that remains
A massive kraken-like octopus may have prowled the seas during the age of dinosaurs
The top predator prowling the seas during the age of the dinosaurs 100 million years ago may have been the octopus.
Did Homo erectus and Denisovans mate? Tooth proteins hint at ancient trysts
Genetic analysis suggests interbreeding between two groups of human relatives
This small rodent is at the center of theories about the hantavirus outbreak
The long-tailed pygmy rice rat is the primary host for Andes virus, the type of hantavirus responsible for sickening passengers on the MV Hondius cruise ship
These ants navigate with a compass tuned to the moon
A newfound nocturnal navigation system challenges what entomologists thought they knew about how ants find their way
Stunning 150-million-year-old stegosaur skull rewrites dinosaur evolution
A spectacular dinosaur discovery in Spain is giving scientists a rare new look inside the world of stegosaurs. Paleontologists uncovered the best-preserved stegosaur skull ever found in Europe, belonging to the iconic plated dinosaur Dacentrurus armatus, which roamed Earth
Lost 1,200-year-old manuscript contains the first English poem
A long-lost manuscript discovered in Rome has revealed one of the oldest surviving versions of the very first known poem written in English. Hidden for decades and once believed lost, the 1,200-year-old manuscript contains Caedmon’s Hymn — a nine-line Old English poem said to
New study debunks the biggest fear about yo-yo dieting
For years, “yo-yo dieting” has been blamed for wrecking metabolism and causing lasting damage, but a major new review says the fear may be wildly overblown. After analyzing decades of studies in humans and animals, researchers found little convincing evidence that losing weight
Scientists discover why some cancers survive chemotherapy
Scientists have uncovered a surprising new trick used by one of cancer’s most notorious proteins. MYC, already infamous for fueling runaway tumor growth, also appears to help cancer cells survive by repairing their damaged DNA — including damage caused by chemotherapy and
Scientists warn that the world’s rivers are running out of oxygen
Rivers around the world are quietly running out of oxygen — and climate change is emerging as the main culprit. A sweeping global analysis of more than 21,000 river systems found that nearly 80% have been steadily losing dissolved oxygen over the past four decades, threatening
AI guardians: Bridging digital innovation and sustainability for cleaner water
Researchers have developed a new framework that uses artificial intelligence to monitor wastewater treatment in real time, ensuring environmental safety while maximizing resource recovery. This "twin transition" approach allows facilities to predict system health and optimize
