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Archive for the ‘cosmology’ category

Nov 16, 2017

Traveling back in time could be possible, physicist says

Posted by in categories: cosmology, particle physics, robotics/AI, time travel, transportation

As the common tropes of science fiction continue to break out into reality, from humanoid robots to self-driving cars, there’s one concept that has seemingly remained beyond our grasp: time travel.

But, jumping through time might not be impossible, after all, according to one astrophysicist.

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Nov 15, 2017

Hypothetical White Holes Could Link us to Different Universes

Posted by in categories: cosmology, physics

Black holes – everyone knows that they exist, but nobody really knows what they are exactly.

A lot of laws of physics seem to be ignored or omitted when it comes to black holes, so there always seems to be a missing link when it comes to understanding how they work.

BLACK HOLE Vs WHITE HOLE

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Nov 12, 2017

Listen: Adam Savage interviews Natasha Vita-More

Posted by in categories: cosmology, evolution, neuroscience, transhumanism

The SYFY25: Origin Stories Podcast, hosted by Adam Savage (editor-in-chief, tested.com and former co-host of Mythbusters), is a nostalgic celebration of all things science fiction. In this podcast series Adam sits down with creators, thought-leaders, and celebrity fans to discuss the moments, people, and milestones that have changed the genre universe forever. From revealing personal anecdotes to deep philosophical discussions.

Transhumanist philosopher Natasha Vita-More chats with Adam and explains what transhumanism means for us regular humans, how it will impact the evolution of humanity, and close we are to uploading our brains into databases, ensuring our immortality.

Listen on iTunes.

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Nov 2, 2017

Neutron star merger confirms decades of predictions

Posted by in categories: cosmology, physics

While black hole collisions produce almost no signature other than gravitational waves, the collision of neutron stars can be — and was — observed up and down the electromagnetic spectrum. “When neutron stars collide, all hell breaks loose,” said Frans Pretorius, a Princeton physics professor. “They start producing a tremendous amount of visible light, and also gamma rays, X-rays, radio waves…”

Princeton researchers have been studying neutron stars and their astronomical signatures for decades.

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Oct 28, 2017

Artificial intelligence finds 56 new gravitational lens candidates

Posted by in categories: cosmology, information science, robotics/AI

A group of astronomers from the universities of Groningen, Naples and Bonn has developed a method that finds gravitational lenses in enormous piles of observations. The method is based on the same artificial intelligence algorithm that Google, Facebook and Tesla have been using in the last years. The researchers published their method and 56 new gravitational lens candidates in the November issue of Monthly Notices of the Royal Astronomical Society.

When a galaxy is hidden behind another galaxy, we can sometimes see the hidden one around the front system. This phenomenon is called a gravitational lens, because it emerges from Einstein’s general relativity theory which says that mass can bend light. Astronomers search for because they help in the research of dark matter.

The hunt for gravitational lenses is painstaking. Astronomers have to sort thousands of images. They are assisted by enthusiastic volunteers around the world. So far, the search was more or less in line with the availability of new images. But thanks to new observations with special telescopes that reflect large sections of the sky, millions of images are added. Humans cannot keep up with that pace.

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Oct 23, 2017

Newfound Wormhole Allows Information to Escape Black Holes

Posted by in categories: cosmology, physics

Physicists theorize that a new “traversable” kind of wormhole could resolve a baffling paradox and rescue information that falls into black holes.

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Oct 12, 2017

The Multiverse Is Inevitable, And We’re Living In It

Posted by in categories: cosmology, physics

Although it might not be observable, if our current theories of physics are correct, the multiverse must exist.

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Oct 4, 2017

Are Space, Time, And Gravity All Just Illusions?

Posted by in categories: cosmology, information science, particle physics, quantum physics

Pioneered by Erik Verlinde, the idea is that gravity emerges from a more fundamental phenomenon in the Universe, and that phenomenon is entropy.

“Sound waves emerge from molecular interactions; atoms emerge from quarks, gluons and electrons and the strong and electromagnetic interactions; planetary systems emerge from gravitation in General Relativity. But in the idea of entropic gravity — as well as some other scenarios (like qbits) — gravitation or even space and time themselves might emerge from other entities in a similar fashion. There are well-known, close relationships between the equations that govern thermodynamics and the ones that govern gravitation. It’s known that the laws of thermodynamics emerge from the more fundamental field of statistical mechanics, but is there something out there more fundamental from which gravity emerges? That’s the idea of entropic gravity.”

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Sep 28, 2017

Quantum teleportation through time-shifted AdS wormholes

Posted by in categories: cosmology, quantum physics

Scholarly paper on building a time machine:

“Quantum teleportation through time-shifted AdS wormholes.

(Submitted on 30 Aug 2017)

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Sep 12, 2017

UV emission linked to Supernova explosion mechanism

Posted by in category: cosmology

Supernovae are an explosion of a massive supergiant star which may shine with the brightness of 10 billion suns! The study of these phenomena has unlocked mysteries about black holes, the origin of metals such as gold and the dynamic of the universe. Supernovae are rare — the last supernova seen in our galaxy was recorded in 1604, according to NASA. However, the Universe is large and astronomers estimated that one of the Milky Way’s massive stars explodes about every 50 years on average [1].

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