Science

Science

The next generation of Starlink Mobile satellites - V2 - will deliver full cellular coverage to places never thought possible via the highest performing satellite-to-mobile network ever built. Driven by custom SpaceX-designed silicon and phased array antennas, the satellites will support thousands of spatial beams and higher bandwidth capability, enabling around 20x the throughput capability as compared to a first-generation satellite.

Researchers administered one of four doses of stem cells to 118 people between 70 and 85 years old, all of whom had frailty. In a timed walking test nine months after treatment, those who had received the highest dose could walk about 60 metres farther, on average, than they could before treatment.

According to Einstein's General Relativity, for every black hole that exists within the Universe, there are only three properties that go into it that matter in any way: the black hole's total mass, the black hole's net electric charge, and the black hole's intrinsic angular momentum, and that's it. It doesn't matter what type of matter went into the black hole in order to form it; all that matters is its mass, charge, and angular momentum.

It influenced my idea of what animals and natural history were, almost before I knew what real animals in the real world were like. For some researchers, themes in the Pokémon games mirror their everyday work. Spencer Monckton, a research scientist at the University of Guelph in Canada, who grew up playing the games and watching the TV series, says that collecting Pokémon is very much the same thing as what an entomologist does.

We found that life is more likely to survive an asteroid impact, so it's definitely still a real possibility that life on Earth could have come from Mars. Maybe we're Martians! The idea that life could have spread through the solar system or even the universe on rocks is known as the lithopanspermia hypothesis.

The article from the journal argues that the gut-autism axis is a house of cards built on lousy studies with inconsistent data. They assert that the studies are contradictory and that too much emphasis is placed on dubious mouse models. It is notoriously challenging to nail down microbial causes of disease—it is hard enough to simply identify a normal microbiome.

Both species are under threat. But while African savanna elephants are endangered, forest elephants are critically endangered. They're also highly elusive. Living in dense tropical rainforests in central Africa and parts of West Africa they're very hard to find and study.

The results showed that the squeaking sound is produced by wave-like patterns across the rubber surface, contacting and then releasing from the glass, allowing the sliding between the surfaces. The waves move across the interface between the two materials at a speed of nearly 300 kilometers per hour.

Although there are many amber stones containing a single creature, there are fewer that include two or more, as is the case with a pair of mosquitoes trapped in amber 130 million years ago which tell us that, back then, males also sucked blood. Even more extraordinary is when several organisms can be seen interacting, either eating the other, acting as a parasite, or cooperating.

Such sex 'distorters' have been discovered - and studied in great depth - in laboratory animals such as mice and flies, in which their effects can be detected through selective breeding. 'If you look, more often than not, you find them,' says Nitin Phadnis, an evolutionary geneticist at the University of Utah in Salt Lake City, who co-led the study.

Mini 3D 'organoids' are slowly phasing out animal testing in some areas of research. These laboratory-grown tissue structures can model human biology more accurately than traditional animal models, reducing the need for animal experimentation while providing more relevant data for drug development and disease research.

an electron within a molecule gets excited to a higher-energy state, the electron de-transitions back to the lower energy state, where it emits light of a very specific wavelength in the process. Then, pumped or injected energy re-excites an electron within that very same molecule back into that higher-energy state, over and over.

Artemis III aims to land astronauts near the lunar South Pole, relying on SpaceX's Starship-derived Human Landing System (HLS) - a vehicle that has yet to achieve orbit, let alone venture anywhere near the Moon. It's an extraordinarily ambitious undertaking, and one the ASAP report has formally classified as high risk.

We've always said that SuperAgers show that the aging brain can be biologically active, adaptable, flexible, but we didn't know why. This is biological proof that their brains are more plastic, and a real discovery that shows that neurogenesis of young neurons in the hippocampus may be a contributing factor.

Our new study suggests that the Apollo samples are biased to extremely rare events that lasted a few thousand years - but up to now, these have been interpreted as representing 0.5 billion years of lunar history. It now seems that a sampling bias prevented us from realizing how short and rare these strong magnetism events were.

In 1938 Blodgett's meticulous experiments with thin film coatings on solid surfaces lead to her most important breakthrough: nonreflecting glass. GE's public relations machine kicks into high gear. Blodgett becomes an overnight sensation in both the scientific community and the press, which dubs her discovery invisible glass. The assistant to the Nobel Prize winner, long invisible herself, takes center stage.

My first thought was whether a small leaf had somehow stuck to the outside of the window. But then I quickly realized that couldn't happen because we were in space. How could there possibly be a fallen leaf there? We could see very clearly the small cracks [with the microscope]. Several were relatively long, and one was shorter. We could also see that some of the cracks had penetrated through.

The fewer solicitations you have, the less time grant applicants have to figure out which of our pigeonholes they fit into. In the past, a solicitation might have been for an individual program, which means it's attached to an individual program officer and a specific dollar amount. Now, instead of going to one program officer's area, the NSF will use technology to better route applications to wherever within the agency they can best be reviewed.

Every black-and-white photograph of the layers of our planet's tectonic history is an act of time travel - it gets us closer to understanding the past and the future of Earth. The photos are proof that the world is ever changing, showing how vast plains of sedimentary materials shift and morph over thousands of centuries.

Tuning frictional behavior on the fly has been a long-standing engineering dream. This new insight into how surface geometry governs slip pulses paves the way for tunable frictional metamaterials that can transition from low-friction to high-grip states on demand.

Human breasts sit at an elevated temperature, protecting a newborn from hypothermia. What's more, the size and shape of the breast allows for broad contact surface - enhancing the heat transfer from mother to child. This could improve a newborn's chances of survival and provide an evolutionarily grounded explanation for the development of external breasts in humans.

Exposure to a fungicide induced changes to gene expression in rats that persisted for at least 20 generations. It also increased the chance of offspring developing kidney disease, obesity or experiencing complications when giving birth, according to the longest-running study of 'epigenetic' changes in mammals.

Last November, the UK government announced a bold plan to phase out animal testing in some areas of research. Animal tests for skin irritation are scheduled for elimination this year, and some studies on dogs should be slashed by 2030. The long-term vision is 'a world where the use of animals in science is eliminated in all but exceptional circumstances'.

In the vacuum of space, the amount of debris-spent rocket stages, splintered satellites, micrometeoroids- numbers in the millions, all zooming about, often at 17,000 mph speeds. They're also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn't completely clean.

I'm less interested in topics than in questions, and I'm less interested in publishing than I am in curation. When I've testified before Congress or dealt with an appropriations bill or a budget negotiation, this question, of what is the return on investments when you're doing R&D, comes up quite often. It's been asked by economists in very formal ways since at least the 1950s, but the data and the methods that were available were really not very strong.

A growing number of AI tools can detect fraudulent elements in papers, but they can be expensive to use. Such tools are probably better deployed by journal publishers rather than individual reviewers, says Elisabeth Bik, a science-integrity consultant in San Francisco, California, especially because feeding unpublished content into AI tools can compromise confidentiality and is generally frowned on during peer review.

One of the most exciting aspects is the rich chemistry we detect. We see dozens of different molecules, including some complex organic molecules that contain carbon, the same element that forms the basis of life on Earth. From ACES, we are learning more about how the ingredients for planets, and potentially life itself, can arise in the universe.

'There exists nothing today that says any alien or any alien machine has ever landed on the planet Earth. If you believe otherwise, you are being misled.' Dr. Lee emphasizes that despite widespread UFO claims, no credible evidence supports alien visitation to Earth, and alternative explanations exist for reported phenomena.