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Category: cosmology – Page 54

What is Time? Stephen Wolfram’s Groundbreaking New Theory [Ep. 468]

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What is time? Is it just a ticking clock, or is it something more profound?

In this thought-provoking episode of Into the Impossible, Stephen Wolfram challenges everything we know about time, offering a revolutionary computational perspective that could forever change how we understand the universe.

Stephen Wolfram is a computer scientist, physicist, and businessman. He is the founder and CEO of Wolfram Research and the creator of Mathematica, Wolfram Alpha, and Wolfram Language. Over the course of 4 decades, he has pioneered the development & application of computational thinking. He has been responsible for many discoveries, inventions & innovations in science, technology, and business.

He argues that time is the inevitable progress of computation in the universe, where simple rules can lead to complex behaviors. This concept, termed computational irreducibility, implies that time has a rigid structure and that our perception of it is limited by our computational capabilities. Wolfram also explores the relationship between time, space, and gravity, suggesting that dark matter might be a feature of the structure of space.

Tune in to discover the true nature of time.

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Dark Matter May Have Existed Before The Big Bang, Study Finds

In case dark matter didn’t seem mysterious enough, a new study proposes that it could have arisen before the Big Bang.

Conventional thinking goes that the Big Bang was the beginning of everything – matter, dark matter, space, energy, all of it. After the event itself, the Universe went through a period of cosmic inflation, which saw its size swell by a factor of 10 septillion within an unfathomable fraction of a second.

But some theories suggest that this inflation period actually occurred before what we call the Big Bang. And now, physicists at the University of Texas (UT) at Austin have proposed that dark matter was formed during this brief window.

Objects previously thought as black holes may actually be wormholes, scientists say

A team of physicists from Sofia University in Bulgaria has proposed a fascinating theory that wormholes, hypothetical tunnels linking different parts of the universe, could be hiding in plain sight. These wormholes may resemble black holes so closely that current technology cannot distinguish between the two, according to a new study reported by New Scientist.

Black holes have long been a source of mystery. They absorb everything, even light, leaving no trace of what falls into them. But where does the swallowed matter go? Some physicists have speculated that black holes might connect to “white holes,” which would spew out particles and radiation on the other end. Together, these phenomena could form a wormhole, or more specifically, an Einstein-Rosen bridge, connecting distant regions of space and time.

Astronomers Just Found Possibly The Largest Rotating Structures in The Universe

Scientists have discovered that cosmic filaments, the largest known structures in the universe, are rotating. These massive, twisting filaments of dark matter and galaxies stretch across hundreds of millions of light-years and play a crucial role in channeling matter to galaxy clusters. The finding challenges existing theories, as it was previously believed that rotation could not occur on such large scales. The research was confirmed through both computer simulations and real-world data, and it opens up new questions about how these giant structures acquire their spin.

After reading the article, a Reddit user named Kane gained more than 100 upvotes with this comment: “What if galaxy clusters are like neuron and glial clusters in a brain. And dark matter is basically the equivalent of a synapse. It connects galaxies and matter together and is responsible for sending quantum information back and forth like a signal chain.”

Scientists Set Out to Capture a Black Hole — an Explosion Photobombed

When you stare for long enough into the heart of a galaxy to try to catch a glimpse of the black hole that lurks therein, that may not be all you catch.

When a huge collaboration directed telescopes around the world to the heart of galaxy M87 in 2018 in an ultimately successful effort to capture detail of its supermassive black hole, they also managed to observe some of the wild shenanigans such a black hole engages in.

Now, astronomers discovered that one of those shenanigans was a colossal belch – a gamma-ray eruption from one of the powerful jets of plasma launched from the black hole’s poles as it feeds.

Group wants to launch a telescope to study black holes from space

Black holes are some of the most extreme objects in the universe, and a new mission proposal suggests launching a space telescope specifically to study them. The Event Horizon Telescope (EHT) group, which took both the first-ever image of a black hole in 2019 and the first-ever image of the supermassive black hole at the center of our galaxy in 2022, has plans for a new mission called the Black Hole Explorer (BHEX).

The idea of BHEX is to use a space-based telescope to collect even more detailed information from black holes, as there is less interference from water vapor when viewing them from above the Earth’s atmosphere. The aim would be to combine data from this telescope with the many telescopes on the ground that are already used in the EHT project. The next phase of the project is a collaboration between the Center for Astrophysics | Harvard & Smithsonian (CfA) and the National Radio Astronomy Observatory (NRAO).

M87’s powerful jet unleashes rare gamma-ray outburst

Also known as Virgo A or NGC 4,486, M87 is the brightest object in the Virgo cluster of galaxies, the largest gravitationally bound type of structure in the universe. It came to fame in April 2019 after scientists from EHT released the first image of a black hole in its center.

Led by the EHT multi wavelength working group, a study published in Astronomy and Astrophysics presents the data from the second EHT conducted in April 2018, involving over 25 terrestrial and orbital telescopes.

The authors report the first observation of a high-energy gamma-ray flare in over a decade from the M87, based on nearly simultaneous spectra of the galaxy spanning the broadest wavelength range ever collected.

Max Tegmark: Will AI Surpass Human Intelligence?

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Will AI ever surpass human intelligence, discover new laws of physics, and solve the greatest mysteries of our universe?

This week on Into the Impossible, I explore the potential and dangers of artificial intelligence with none other than Max Tegmark!

Max Tegmark is a renowned physicist and machine learning expert who dedicated his career to uncovering the mathematical fabric of reality, proposing that our universe itself might be a vast mathematical structure and that we could be living in a multiverse of endless possibilities. His work goes beyond physics to tackle the transformative power and ethical challenges of artificial intelligence, an area where he believes humanity must tread carefully.

In the second part of our fascinating interview, we discuss the development of AI, the impact it will have on science, and our role in all of this.

Tune in to discover if AI will ever surpass human intelligence!

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