Blog

Archive for the ‘cosmology’ category

Jul 22, 2016

Another dark matter search comes up empty

Posted by in category: cosmology

Even though dark matter has not yet been found, scientists are confident it exists as its effects can be seen in the rotation of galaxies and the bending of light as it makes its way through the universe.


The Large Underground Xenon (LUX) dark matter experiment has found no traces of dark matter.

Jul 22, 2016

Most of the universe may be trapped inside of ancient black holes

Posted by in categories: computing, cosmology, particle physics

(A computer simulation of a black hole. NASA, ESA, and D. Coe, J. Anderson, and R. van der Marel (STScI))

In case you haven’t heard, there is a very, very big problem with the universe: About 80% of all of the stuff inside it is missing.

Astronomers call this material “dark matter.” They know it’s out there because its huge mass tugs on and shapes galaxies, but no one has ever detected the material itself. Aside from exerting a gravitational pull, dark matter doesn’t seem to interact with stars, planets, dust, atoms, subatomic particles, or any other “normal” matter as we know it. It’s essentially invisible.

Continue reading “Most of the universe may be trapped inside of ancient black holes” »

Jul 21, 2016

Mining Black Hole Collisions for New Physics

Posted by in categories: cosmology, particle physics

The physicist Asimina Arvanitaki is thinking up ways to search gravitational wave data for evidence of dark matter particles orbiting black holes.

Jul 21, 2016

The Allegory of the Cave

Posted by in categories: cosmology, quantum physics

Inspired by the Allegory of the Cave from Plato, till today’s quantum physics and multiverse theories, a visual essay about perception and knowledge as reflection of our reality.

visualsuspect.co

Continue reading “The Allegory of the Cave” »

Jul 20, 2016

Physicists Say They’ve Figured out How Spacecraft Could Make It Through a Wormhole

Posted by in categories: climatology, cosmology, physics, space travel, sustainability

A new paper asserts that a physical body might be able to pass through a wormhole in spite of the extreme tidal forces that are at play.

A physical object, such as a person or a spacecraft, could theoretically make it through a wormhole in the centre of a black hole, and maybe even access another universe on the other side, physicists have suggested.

Continue reading “Physicists Say They’ve Figured out How Spacecraft Could Make It Through a Wormhole” »

Jul 20, 2016

Can black holes tunnel to white holes?

Posted by in category: cosmology

Tl;dr: Yes, but it’s unlikely.

If black holes attract your attention, white holes might blow your mind.

A white hole is a time-reversed black hole, an anti-collapse. While a black hole contains a region from which nothing can escape, a white hole contains a region to which nothing can fall in. Since the time-reversal of a solution of General Relativity is another solution, we know that white holes exist mathematically. But are they real?

Continue reading “Can black holes tunnel to white holes?” »

Jul 12, 2016

No Big Bang –“Our Universe Was Formed From an Older Collapsing Universe”

Posted by in categories: cosmology, materials

A new study of the early universe reveals how it could have been formed from an older collapsing universe, rather than being brand new. The universe is currently expanding and it is a common theory that this is the result of the ‘Big Bang’ – the universe bursting into existence from a point of infinitely dense and hot material.

Jul 11, 2016

‘Crowd Control,’ part 22: Spies in heaven

Posted by in categories: cosmology, geopolitics, transhumanism

The final chapter in CNET’s historic “crowdsourced” sci-fi novel is out. You can read the whole thing here. Transhumanism is a large part of it (and a fictional version of my being President is in it too). This book was written by the participating public. This was a huge plus for the Transhumanist movement, as it meant transhumanism appeared many times on CNET as chapters were released (CNET is the world’s leading tech site in traffic):


In the finale of CNET’s historic crowdsourced sci-fi novel, the war on Earth is over, but the story of the multiverse may just be getting started.

Jul 11, 2016

Our universe could be reborn as a bouncing baby cosmos

Posted by in categories: cosmology, physics

A new model shows how the universe could survive a “big bounce” rather than a big bang, without the need for complex new physics.

Jul 9, 2016

NASA’s ‘Dark Matter’ Probe: “Our Milky Way Galaxy is Embedded Within a Vast Sphere of Black Holes” (Weekend Feature)

Posted by in category: cosmology

“All galaxies, including our own, are embedded within a vast sphere of black holes each about 30 times the sun’s mass,” says Alexander Kashlinsky, an astrophysicist at NASA’s Goddard Space Flight Center.

Page 1 of 2612345678Last