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Archive for the ‘cosmology’ category: Page 391

Oct 22, 2015

Time Travel & The Multiverse – Many Worlds: Many Timelines

Posted by in categories: cosmology, time travel

Excerpt from This Book Is From the Future: A Journey Through Portals, Relativity, Wormholes and Other Adventures in Time Travel by Marie D. Jones & Larry Flaxman.

Time travel has enchanted and intrigued us since the earliest days of fiction, when authors such as H.G. Wells, Samuel Madden, Charles Dickens and Enrique Gaspar y Rimbau stretched and challenged our imaginations with images and tales of men and women who invented amazing machines and devices that could take them back in time, or forward into the future.

Because of the restrictions of light speed, and the paradoxes of going back to the past without damaging the future timeline, and a host of other obstacles and challenges, we, in fact, have remained stuck in the present.

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Oct 22, 2015

This Is What it Looks Like When a Black Hole Shreds a Star

Posted by in categories: cosmology, evolution

When a star wanders too close to a black hole, immense gravitational forces begin to rip it apart in an epic cosmic slaying called a “tidal disruption event.” Some of the star’s mass is flung outward into space, while the rest is drawn in, triggering a powerful flare that showers the sky with x-rays.

Using NASA’s Chandra X-ray Observatory and other telescopes, a team of astronomers has now pieced together one such astronomical feasting frenzy. The event in question, appropriately named “ASASSN-14li,” was spotted near the center of PGC 043234, a galaxy that lies 290 million light years from Earth.

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Oct 20, 2015

Scientists at Large Hadron Collider hope to make contact with PARALLEL UNIVERSE in days

Posted by in category: cosmology

SCIENTISTS conducting a mindbending experiment at the Large Hadron Collider next week hope to connect with a PARALLEL UNIVERSE outside of our own.

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Oct 13, 2015

How Is It Possible That Galaxies Are Moving Away From Us Faster Than the Speed of Light?

Posted by in category: cosmology

According to Albert Einstein, the speed of light is an absolute constant beyond which nothing can move faster. So, how can galaxies be traveling faster than the speed of light if nothing is supposed to be able to break this cosmic speed limit?

I’m a little world of contradictions. “Not even light itself can escape a black hole,” and then, “black holes are the brightest objects in the Universe.” I’ve also said “nothing can travel faster than the speed of light”. And then I’ll say something like, “galaxies are moving away from us faster than the speed of light.” There’s more than a few items on this list, and it’s confusing at best. Thanks Universe!

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Oct 13, 2015

The Simulation Hypothesis

Posted by in categories: cosmology, entertainment, virtual reality

https://vimeo.com/126833477

Are we living in a virtual reality? Is the universe emerging from an information processing system? And if so, could we ever tell? Is it possible to ‘hack’ the system and change reality? Take a look at the evidence and decide for yourself! Contributions to THE SIMULATION HYPOTHESIS are made by leading researchers from physics, cosmology, mathematics and information sciences. Appearances by MaxTegmark, Neil degrasse Tyson, Paul Davies, James Gates and many more. Science has never been so much fun!

“What an incredible film! Fascinating, mind-bending stuff.” — Timothy Rhys, Publisher: MovieMaker Magazine.

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Oct 10, 2015

Physicists say energy can be teleported ‘without a limit of distance’

Posted by in categories: cosmology, energy, particle physics, quantum physics

A team of physicists has proposed a way of teleporting energy over long distances. The technique, which is purely theoretical at this point, takes advantage of the strange quantum phenomenon of entanglement where two particles share the same existence.

The researchers, who work out of Tohoku University in Japan, and led by Masahiro Hotta,describe their proposal in the latest edition of Physical Review A. Their system exploits properties of squeezed light or vacuum states that should allow for the teleportation of information about an energy state. In turn, this teleported quantum energy could be made useable.

Unlike teleportation schemes as portrayed in Star Trek or The Fly, this type of teleportation describes entanglement experiments in which two entangled particles are joined despite no apparent connection between them. When a change happens to one particle, the same change happens to the other. Hence, the impression of teleportation. Physicists have conducted experiments using light, matter, and now, energy.

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Oct 8, 2015

Entanglement: Gravity’s long-distance connection

Posted by in categories: computing, cosmology, quantum physics

Many researchers find these ideas irresistible. Within the last few years, physicists in seemingly unrelated specialties have converged on this confluence of entanglement, space and wormholes. Scientists who once focused on building error-resistant quantum computers are now pondering whether the universe itself is a vast quantum computer that safely encodes spacetime in an elaborate web of entanglement. “It’s amazing how things have been progressing,” says Van Raamsdonk, of the University of British Columbia in Vancouver.

Physicists have high hopes for where this entanglement-spacetime connection will lead them. General relativity brilliantly describes how spacetime works; this new research may reveal where spacetime comes from and what it looks like at the small scales governed by quantum mechanics. Entanglement could be the secret ingredient that unifies these supposedly incompatible views into a theory of quantum gravity, enabling physicists to understand conditions inside black holes and in the very first moments after the Big Bang.

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Oct 4, 2015

Illustris: The Supercomputer That’s Bringing The Universe To Life

Posted by in categories: cosmology, entertainment, supercomputing

Catalyst: Virtual Universe — The Illustris supercomputer has modelled vast swathes of the universe, allowing us to visualise incredible scenarios in outer space.

Go to the Journeyman Science playlist: https://www.youtube.com/playlist?list=PLlGSlkijht5iXbPX7d_oTP47c9C3kArQ0

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Sep 28, 2015

Black hole is 35,000,000 times larger than the sun — CNN Video

Posted by in category: cosmology

Astronomers have discovered a supermassive black hole at the center of a newly-discovered galaxy, and it’s 30 times bigger than they thought possible.

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Sep 25, 2015

New ‘stealth dark matter’ theory may explain mystery of the universe’s missing mass

Posted by in categories: cosmology, supercomputing

A new theory that may explain why dark matter has evaded direct detection in Earth-based experiments has been developed by team of Lawrence Livermore National Laboratory (LLNL) particle physicists known as the Lattice Strong Dynamics Collaboration.

The group has combined theoretical and computational physics techniques and used the Laboratory’s massively parallel 2-petaflop Vulcan supercomputer to devise a new model of dark matter. The model identifies today’s dark matter as naturally “stealthy.” But in the extremely high-temperature plasma conditions that pervaded the early universe, it would have been easy to see dark matter via interactions with ordinary matter, the model shows.

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