Lifeboat Foundation

Recently more careful examination of the structure of the universe has thrown up fresh reasons to doubt cold dark matter. Its concept may work well at the largest scales, but on the scale of individual galaxies, something seems incomplete.

According to the cold dark matter model, dark matter sub-halos of all sizes, right down to Earth-scale masses, should exist. This would be a lot of invisible cannonballs to be floating around the Milky Way and interacting with star streams, yet hardly any evidence has been found, besides in 2018, when Adrian Price-Whelan and Ana Bonaca found that one particular star stream, better known as GD-1, has gaps along its length, as if it has been hit multiple times.

Another more recent doubt about the cold matter concept is that simulations show halos should get denser towards the center of the galaxy: the closer you get to the center, the more dark matter per unit volume should be. However, when astronomers look at the way galaxies move, this isn’t what they see: the dark matter appears evenly distributed across the halo of our galaxy, especially in the core regions. Which could be a hint that something more complex is going on.

Scientists are on the brink of a propulsion breakthrough.

As the US grapples with an ongoing bird flu outbreak in dairy cattle, the country’s health agencies are ramping up surveillance efforts and working to develop a vaccine if needed.

By Grace Wade

Microsoft has changed its terms of service to ban certain police departments from using Azure OpenAI Service.

More than 16,000 pounds of ground beef products shipped to Walmart stores may be carrying E.coli, the FSIS has warned.

Tesla is prioritizing the development of Full Self-Driving technology and robo taxis, focusing on AI hardware and real-world AI solutions to generate cash for future investments and potential partnerships with Chinese EV makers Questions to inspire discussion What is Tesla prioritizing in their development? —Tesla is p.

Solar activity entered the growth phase a week earlier than forecast.

На Солнце около половины шестого утра по московскому времени зарегистрирована вспышка высшего балла X. Событий такой мощности не было с 22 февраля, когда произошла пока наиболее сильная вспышка текущего солнечного цикла уровня X6.3. По предварительным данным вспышка спровоцировала выбросы солнечной плазмы в космос, но точное их направление пока не понятно. В поле зрения коронографов вещество появится только примерно через час. Возможность движения облаков плазмы в сторону Земли, предварительно, исключительно высокая — активный центр, где произошел взрыв, расположен прямо напротив Земли. Оценка по наличию выброса и геомагнитный прогноз будут выданы в течение 2 часов.

A Careful Examination of Large Language Model Performance on Grade School Arithmetic How overfit are popular LLMs on public benchmarks?

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A paper in Nature Communications describes a gene that regulates the structure of social networks in fruit flies, which is named after the actor Kevin Bacon. Read the paper:

The structure of a social network is thought to be heritable in many animals, including humans. Here, Rooke and colleagues identify a gene, which they name “degrees of kevin bacon (dokb)”, that is expressed in the central nervous system of Drosophila melanogaster and regulates the structure of social networks.