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Archive for the ‘space’ category: Page 936

Sep 17, 2016

Physicists Are Close to Producing Metallic Hydrogen, And It Could Change Everything

Posted by in categories: evolution, physics, space

The implications of the discovery of hydrogen in a metallic form make it a subject of great fervor. Teams are racing toward its use as a superconductor as well as a means of better understanding the universe.

The simplest and most common element, first in the periodic table, shouldn’t be difficult to crack, right? “What could be more simple than an assembly of electrons and protons?” asks Neil Aschcroft, a theoretical physicist at Cornell University. Yet, its supposed metallic form is quite the opposite. Apparently, the physics of hydrogen becomes more complex at high pressures. A sort of mega-evolution.

Hydrogen is naturally at a gaseous state, at room temperature and under atmospheric pressure. But hydrogen becomes solid, given enough of a forceful squeeze or at low temperatures. It also can transform into a liquid, if heat is added while squeezing. What is more confounding is the supposed ability of hydrogen, theoretically, to transform into metal if more extreme conditions are applied.

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Sep 17, 2016

Jeff Bezos’ space company is a lot like Amazon was in 1994

Posted by in category: space

Jeff Bezos has a talent for persuading Wall Street to back radically long-term investments. He’ll certainly need it if he ever decides to take his space company, Blue Origin, public.

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Sep 14, 2016

How-to guide: Building a new civilization in space

Posted by in category: space

We are running out of room and resources here on earth. United Launch Alliance is looking beyond planet earth to solve these problems.

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Sep 14, 2016

Roc and Sling, part 2

Posted by in categories: entertainment, space

Refining and redesigning my Mars rocket.

Love Imgur? Join our team!

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Sep 13, 2016

New Laser Provides Ultra-Precise Tool for Scientists Probing the Secrets of the Universe

Posted by in categories: particle physics, quantum physics, space

WASHINGTON — Researchers have developed a new laser that makes it possible to measure electron transition energies in small atoms and molecules with unprecedented precision. The instrument will help scientists test one of the bedrock theories of modern physics to new limits, and may help resolve an unexplained discrepancy in measurements of the size of the proton.

The team will present their work during the Frontiers in Optics (FiO) / Laser Science (LS) conference in Rochester, New York, USA on 17 −21 October 2016.

“Our target is the best tested theory there is: quantum electrodynamics,” said Kjeld Eikema, a physicist at Vrije University, The Netherlands, who led the team that built the laser. Quantum electrodynamics, or QED, was developed in the 1940s to make sense of small unexplained deviations in the measured structure of atomic hydrogen. The theory describes how light and matter interact, including the effect of ghostly ‘virtual particles.’ Its predictions have been rigorously tested and are remarkably accurate, but like extremely dedicated quality control officers, physicists keep ordering new tests, hoping to find new insights lurking in the experimentally hard-to-reach regions where the theory may yet break down.

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Sep 12, 2016

The Universe expands equally in all directions — and this is bad news for Einstein’s equations

Posted by in categories: information science, space

Zoom out far enough, and the Universe is a pretty homogenous place.

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Sep 12, 2016

Jeff Bezos’s New Rocket, Built to Carry Payloads and People — By Marina Koren | The Atlantic

Posted by in categories: space, space travel

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“The founder of spaceflight company Blue Origin announced Monday the design of an orbital rocket called New Glenn.”

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Sep 12, 2016

Loren Grush on Twitter

Posted by in category: space

“And we have Bezos’ plans for an orbital rocket”

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Sep 11, 2016

Elon Musk: ‘We Have Not Ruled Out’ That UFO Caused Space X Explosion (VIDEO)

Posted by in categories: Elon Musk, space

Hmmm.


The statement by the vaunted entrepreneur that he couldn’t rule out that UFO hunters were correct that an unidentified object or weapon initiated the explosion has alien enthusiasts out in full force.

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Sep 11, 2016

Gravitation under human control? This proposal could transform physics

Posted by in categories: physics, space

Produce and detect gravitational fields at will using magnetic fields, control them for studying them, work with them to produce new technologies — it sounds daring, but Prof. André Füzfa of Namur University has proposed just that in an article published in the scientific journal Physical Review D. If followed, this proposal could transform physics and shake up Einstein’s theory of general relativity.

At present, scientists study gravitational fields passively: they observe and try to understand existing gravitational fields produced by large inertial masses, such as stars or Earth, without being able to change them as is done, for example, with magnetic fields.

It was this frustration that led Füzfa to attempt a revolutionary approach: creating gravitational fields at will from well-controlled magnetic fields and observing how these magnetic fields could bend space-time.

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