(testing signal)

Tag: universe

🌋 The Biggest Problems in ML Safety

📝 Editorial Machine learning (ML) is advancing at an incredibly rapid pace, with bigger and more complex models being created regularly. That level of growth has brought an increase in the security and safety risks of ML models. The main challenge with ML safety is that it is very hard to understand and quantify fully. Beyond some techniques such as adversarial attacks, the universe of ML safety challenges remains relatively obscure. Developing methods to quantify ML safety risks is one…… Read more...

Are we alone in the universe? — Data Analysis and Data Visualization of UFO sightings with R

How to analyze and visualize data of UFO sightings of the last century in the USA and the rest of the worldDashboard to see the generated plots about UFO Sightings. The link at the end of the article

One of the questions that human beings can ask themselves is whether we are alone in the universe. I think it would be ridiculous and extremely vain to assume that we are the only civilization with enough intelligence to visit other worlds in the universe. What if other civilizations more intelligent than us have already visited us? What if they are watching us right now?… Read more...

The Universe has an average colour – and it’s called cosmic latte

In a 2002 study, astronomers found that the light coming from galaxies (and the stars within them) – alongside all the visible clouds of gas and dust in the Universe – when averaged, would produce an ivory colour very close to white. They named this colour ‘cosmic latte’.

The ‘beigeness’ of the Universe is because there are slightly more regions that produce red, yellow and green light than those that produce blue. Averaged over the entire sky, however, this beige colour is diluted and appears almost, but not entirely, black.

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Asked by: Lola Myers, Cardiff

To submit your questions email us at questions@sciencefocus.com

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The Most Important Device In The Universe Is Powered By A 555 Timer

The Hackaday comments section has become infamous for a recurring theme that goes something like “I don’t know why they used an Arduino, they could have done it with a 555 timer!” If you’ve ever thought the same way, then this post is for you!

What is The Most Important Device In The Universe, then? It’s the Modern Props #195-290-1, a movie prop originally built in the 1970’s. It’s a product of the creative mind of [John Zabrucky] who founded Modern Props in 1977 to serve Sci-Fi television and movie productions that wanted to invent the future with their props.

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One of nature’s key constants is much larger in a quantum material

A crucial number that rules the universe goes big in a strange quantum material.

The fine-structure constant is about 10 times its normal value in a type of material called quantum spin ice, physicists calculate in the Sept. 10 Physical Review Letters. The new calculation hints that quantum spin ice could give a glimpse at physics within an alternate universe where the constant is much larger.

With an influence that permeates physics and chemistry, the fine-structure constant sets the strength of interactions between electrically charged particles. Its value, about 1/137, consternates physicists because they can’t explain why it has that value, even though it is necessary for the complex chemistry that is the basis of life (SN: 11/2/16).

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Researchers: The Universe Simulated Itself Into Existence

Yesterday, we looked at “Untitled Earth Sim 64,” a science fiction comedy based on the idea that Earth is a messed up simulation — created by entities that are in themselves simulations. And maybe their simulators were in turn simulated… And so forth. The problem is, where’s the original? Surprisingly, perhaps, there is a physics theory that offers an answer: The universe simulated itself:

A new hypothesis says the universe self-simulates itself in a “strange loop”. A paper from the Quantum Gravity Research institute proposes there is an underlying panconsciousness. The work looks to unify insight from quantum mechanics with a non-materialistic perspective.

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Astrobiologist: ET Viruses Likely Exist on Planets That Host Life

University of Arizona astrobiologist Paul Davies, author of many books, including the recent What’s Eating the Universe? (2021), told The Guardian, recently that if cellular life exists on other planets, something like viruses probably also exist — to transfer genetic information from one life form to another.

Viruses, said Davies, can be thought of as mobile, genetic elements. Indeed, a number of studies have suggested genetic material from viruses has been incorporated into the genomes of humans and other animals by a process known as horizontal gene transfer.

Nicola Davis, “Viruses may exist ‘elsewhere in the universe’, warns scientist” at The Guardian (September 6, 2021)

Horizontal gene transfer, by which life forms “swap” genes, are common in bacteria and have been found in many other types of life.

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Fine-tuning? How Bayesian Statistics Could Help Break a Deadlock

In the earlier part of podcast episode 150, “Ours is a finely tuned — and No Free Lunch — universe,” Swedish mathematician Ola Hössjer and University of Miami biostatistician Daniel Andrés Díaz-Pachón discussed with Walter Bradley Center director Robert J. Marks the many ways in which the universe is finely tuned for life. Many theorists are not happy with the idea of fine-tuning because they are uncomfortable with its theistic implications. In this second portion of the episode, they discuss how a method of estimating probability called Bayesian statistics or Bayes theorem could help break a deadlock around fine-tuning:


This portion begins at 13:00 min.

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Have we detected dark energy? Scientists say it's a possibility

Dark energy, the mysterious force that causes the universe to accelerate, may have been responsible for unexpected results from the XENON1T experiment, deep below Italy’s Apennine Mountains.

A new study, led by researchers at the University of Cambridge and reported in the journal Physical Review D, suggests that some unexplained results from the XENON1T experiment in Italy may have been caused by dark energy, and not the dark matter the experiment was designed to detect.

They constructed a physical model to help explain the results, which may have originated from dark energy particles produced in a region of the Sun with strong magnetic fields, although future experiments will be required to confirm this explanation.

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New Theory of Mind Offers More Information, Less Materialism – Walter Bradley Center for Natural and Artificial Intelligence

At Nautilus, evolutionary biologist Tam Hunt asks us to consider the “General Resonance Theory of Consciousness,” which he has been developing with psychologist Jonathan Schooler — “a framework with a panpsychist foundation. It may, he thinks, “at least in theory, provide more complete answers to the full array of questions the hard problem of consciousness poses.”

Tam Hunt

Hunt’s quite clear about the panpsychism (the view that everything in the universe participates in consciousness):

Since I came up in philosophy, rather than neuroscience or psychology, for me the easy part was deciding the philosophical orientation. Schooler and I duked it out over whether we should adopt a materialist, idealist, panpsychist, or some other position on our way to a complete answer.

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A supernova’s delayed reappearance could pin down how fast the universe expands

A meandering trek taken by light from a remote supernova in the constellation Cetus may help researchers pin down how fast the universe expands — in another couple of decades.

About 10 billion years ago, a star exploded in a far-off galaxy named MRG-M0138. Some of the light from that explosion later encountered a gravitational lens, a cluster of galaxies whose gravity sent the light on multiple diverging paths. In 2016, the supernova appeared in Earth’s sky as three distinct points of light, each marking three different paths the light took to get here.

Now, researchers predict that the supernova will appear again in the late 2030s.

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Four ways artificial intelligence is helping us learn about the universe

Astronomy is all about data. The universe is getting bigger and so too is the amount of information we have about it. But some of the biggest challenges of the next generation of astronomy lie in just how we’re going to study all the data we’re collecting.

Copyright by theconversation.com

To take on these challenges, astronomers are turning to and () to build new tools to rapidly search for the next big breakthroughs. Here are four ways is helping astronomers.

1. Planet hunting

There are a few ways to find a planet, but the most successful has been by studying transits.

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Ours Is a Finely Tuned — and No Free Lunch — Universe

Our Walter Bradley Center director Robert J. Marks had a chance, recently, to talk with Swedish mathematician Ola Hössjer and University of Miami biostatistician Daniel Andrés Díaz-Pachón on the many ways in which the universe is finely tuned for life. This is Part 1. Part 2 will shortly follow.


This portion begins at 00:00 min. A partial transcript, Show Notes, and Additional Resources follow.

Today on Mind Matters news on the podcast, we’re going to talk about fine-tuning of the universe for life. Scientists know that Earth is is finely tuned for life to come into existence. For example, pronounced atheist Sir Fred Hoyle (1915–2001).

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Darkeras: Execute YOLOv3/YOLOv4 Object Detection on Keras with Darknet Pre-trained Weights

Everything in the universe is connected.

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Veteran Science Writer Says We Won’t Meet Intelligent Aliens

“It does not matter if intelligent life exists elsewhere. We will never find each other,” says veteran science writer Alex Berezow.

He’s not saying they are not out there. He is throwing cold water on our chances of contacting them.

Some things, he admits, have changed:

Thanks to advances in astrophysics, we now know that there are billions of exoplanets in the Milky Way alone, leading most of the scientific community to conclude that life probably does exist elsewhere in the universe. Those who do not believe so are now considered the kooks. And while alien abductions are still not in the mainstream, UFOs are — so much so that the U.S.

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50 years ago, physicists thought they found the W boson. They hadn’t

The W particle may have been foundScience News, August 21, 1971

Physicists distinguish four different kinds of force by which objects in the universe act upon each other: the strong nuclear force, the weak force, electromagnetism and gravity. The developed theory of particle physics outfits each force with a so-called intermediate particle.… Now, from an abandoned silver mine at Park City, Utah, comes strong evidence of the existence of the weak-force quantum, known as the … W particle.

Update

The “strong evidence” for this W particle, or W boson, fell apart under additional scrutiny. Physicists with CERN near Geneva finally caught the boson about a decade later (SN: 2/5/83, p.

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El tiempo y el espacio son fragmentación: ayer/mañana, aquí/allí, yo/otros, etc. esta fragmentación induce el EGO, que es  la creencia de que somos algo separado de lo demás, que las cosas "nos ocurren" a nosotros, y que por lo tanto debemos reaccionar a ellas.

La Aparente Dualidad

La dualidad material / inmaterial, espiritual / científica, intuitiva / racional, etc. es en realidad una falacia. Como materia y energía: diferentes puntos de v...

Cosmology in the dark

Over the past half-century, cosmology has evolved from a largely speculative science to one founded in precise and rigorous measurement and observation. Much of this transformation has been built on the back of increasingly powerful tools for observing the Universe, from telescopes to gravitational wave detectors. However, following decades of breakthroughs, this extraordinary progress has recently come to something of a halt, stalled by several mysteries: dark matter, dark energy and the accelerating expansion of the Universe.

So how should cosmologists press forward? In this instalment of Aeon’s In Sight series, Pedro G Ferreira, a professor of astrophysics at the University of Oxford, addresses what he calls the ‘cosmological chasm’ between ‘the physics we know and love, and some of the phenomena that we observe, but simply can’t make head nor tail of’.

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The sounds of space

If the Universe is born and no one is present to hear it, does it still make a sound? Well, theoretically, yes. As this video from the US filmmaker John D Boswell (also known as Melodysheep) explores, where a ‘thick soup of atoms’ is present, sound is possible. Made in collaboration with the podcast Twenty Thousand Hertz, this short documentary deploys dramatic CGI visuals, a pulsing score and the voices of prominent scientists to explore the sounds of space – from those humanity has recorded to those we can only speculate about. While ostensibly an interplanetary journey, The Sounds of Space is perhaps most intriguing when viewed as an exploration of the physics of sound, and the science of how we’ve evolved to receive soundwaves right here on Earth.

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