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Aug 17, 2024

James Webb Telescope May Have Finally Solved the Crisis in Cosmology

Posted by in category: cosmology

The “crisis in cosmology,” sparked by differing measurements of the universe’s expansion, may be nearing a resolution thanks to the James Webb Space Telescope. New data analyzed by scientists suggests that the Hubble tension might not be as severe as previously thought. This could mean our current model of the universe remains accurate.

The Debate on the Universe’s Expansion Rate

We know many things about our universe, but astronomers are still debating exactly how fast it is expanding. In fact, over the past two decades, two major ways to measure this number — known as the “Hubble constant” — have come up with different answers, leading some to wonder if there was something missing from our model of how the universe works.

Aug 17, 2024

Auroras and Outages: Exploring the Vast Atmospheric Shifts of May’s Geomagnetic Superstorm

Posted by in categories: particle physics, satellites

What could the anomalies in temperature, composition, location, and spread of particles mean for satellites and GPS?

A powerful geomagnetic storm on May 11 led to visible auroras in the southern U.S. and disrupted GPS technology. Researchers from Virginia Tech, utilizing NASA ’s GOLD instrument, documented unprecedented atmospheric phenomena and examined the effects on Earth’s ionosphere. The studies underscore the dynamic nature of the upper atmosphere and its susceptibility to solar activities, which are currently intensifying as we approach the peak of the solar cycle in 2025.

Stunning Auroras and Technological Disruptions.

Aug 17, 2024

Breaking Barriers in Optics: The Power of Coherence Entropy

Posted by in categories: biotech/medical, internet

Scientists have made a groundbreaking advancement in understanding light propagation through complex media, potentially revolutionizing fields like optical communication and medical imaging.

By introducing the concept of coherence entropy, a new metric for evaluating light behavior, they have provided a reliable tool for managing light fields in challenging environments. This research could significantly enhance the performance of systems that rely on light, particularly in situations where traditional methods fail due to media distortion.

Light technology is at the heart of many cutting-edge innovations, from high-speed internet to advanced medical imaging. However, transmitting light through challenging environments, such as turbulent atmospheres or deformed optical systems, has always posed a significant hurdle. These complexities can distort and disrupt the light field, making it difficult to achieve clear and reliable results. Scientists have long sought ways to overcome these limitations, and a new breakthrough may hold the key to advance practical applications.

Aug 17, 2024

We Finally Know Where The Asteroid That Killed The Dinosaurs Came From

Posted by in categories: asteroid/comet impacts, existential risks

A space rock that smacked into Earth 66 million years ago and devastated the ancient life living thereon took a remarkably circuitous route to get here, a new study has found.

The Chicxulub event – the giant impact that ended the reign of non-avian dinosaurs, clearing the way for mammalian life to rise – was triggered by an asteroid from a region of the Solar System out past the orbit of Jupiter, the cold, dark outer limits, far from the Sun’s light and warmth.

And an asteroid it was indeed, with the new findings by an international team of researchers ruling out that the object could have been a comet.

Aug 17, 2024

PC Port of Assassin’s Creed Unity Was Bad so UE5 Nanite Could Exist

Posted by in category: futurism

A former Ubisoft engineer explained why Unity’s PC port was lacking.

Aug 17, 2024

Emergence: The mysterious concept that holds the key to consciousness

Posted by in category: neuroscience

A better understanding of emergent phenomena like the wetness of water, where the properties of a system can’t be explained by those of its constituent parts, could unravel some big mysteries.

By Michael Brooks

Aug 17, 2024

Network model with internal complexity bridges artificial intelligence and neuroscience

Posted by in categories: neuroscience, robotics/AI

This study shows that by enhancing internal complexity of neurons in a Hodgkin–Huxley network, similar performance to larger, simpler networks can be achieved, suggesting an alternative path for powerful AI systems by focusing on neuron complexity.

Aug 17, 2024

Newly discovered protein stops DNA damage

Posted by in categories: biotech/medical, food

Researchers from Western University have discovered a protein that has the never-before-seen ability to stop DNA damage in its tracks. The finding could provide the foundation for developing everything from vaccines against cancer, to crops that can withstand the increasingly harsh growing conditions brought on by climate change.

Aug 17, 2024

New Research Reveals That Your Brain’s Memory “Resets” Every Night

Posted by in category: neuroscience

Cornell University research demonstrates that sleep resets the hippocampus, enabling continuous learning and offering new strategies for treating memory-related disorders.

While everyone knows that a good night’s sleep restores energy, a new Cornell University study finds it resets another vital function: memory.

Learning or experiencing new things activates neurons in the hippocampus, a region of the brain vital for memory. Later, while we sleep, those same neurons repeat the same pattern of activity, which is how the brain consolidates those memories that are then stored in a large area called the cortex. But how is it that we can keep learning new things for a lifetime without using up all of our neurons?

Aug 17, 2024

Brain found to store three copies of every memory

Posted by in categories: computing, neuroscience

Like a computer system with built-in redundancies, a study has revealed that brains use three different sets of neurons to store a single memory. The finding could one day help soften painful memories in people who’ve suffered trauma.

By imaging the brains of mice, researchers at the University of Basel’s Biozentrum, were able to watch what happens when a new memory is formed. What they found was that the rodent brains called three different sets of neurons into action to record the memory. The first are known as early-born neurons and are the earliest to develop as a fetus is growing. At the other end of the spectrum are the late-born neurons, which show up late in embryonic development. Between these are neurons that form somewhere right in the middle of growth in the womb.

The imaging study revealed that when the new memory is stored in the early-born neurons, it is initially hard to retrieve, but it becomes stronger as time goes on.

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