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Archive for the ‘space’ category: Page 249

Nov 12, 2022

Scientists Reproduce Fascinating, Powerful Material Found in Meteorite

Posted by in categories: materials, space

In an unprecedented experiment, two teams of scientists on either sides of the Atlantic have replicated a material that was previously not produced anywhere on Earth.

As NPR reports, the replication of this powerful compound could have huge implications not just for the manufacturing of high-end machinery, but also for international relations to boot.

Called tetrataenite, the primarily iron-and-nickel compound is normally able to cool for millions of years as it tumbles around in asteroids. As a press release out of the University of Cambridge notes, the researchers who worked in tandem with Boston’s Northeastern University found that if they add phosphorous to the mix, they were able to make synthetic tetrataenite.

Nov 12, 2022

The Global Mind, Collective Intelligence, Agency, and Morphogenesis — Michael Levin Λ Joscha Bach

Posted by in category: space

This theolocution has been released early in an ad-free audio version for TOE members at http://theoriesofeverything.org.

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Nov 11, 2022

NASA leaves its Artemis I rocket exposed to winds above design limits

Posted by in categories: climatology, space

Early on Thursday morning, Hurricane Nicole made landfall near Vero Beach on Florida’s eastern coast. Because Nicole had a very large eye, nearly 60 miles in diameter, its strongest winds were located well to the north of this landfalling position.

As a result of this, Kennedy Space Center took some of the most intense wind gusts from Nicole late on Wednesday night and Thursday morning. While such winds from a Category 1 hurricane are unlikely to damage facilities, they are of concern because the space agency left its Artemis I mission—consisting of the Space Launch System rocket and Orion spacecraft—exposed on a pad at Launch Complex-39B. The pad is a stone’s throw from the Atlantic Ocean.

How intense were the winds? The National Weather Service hosts data from NASA sensors attached to this launch pad’s three lighting towers on a public website. It can be a little difficult to interpret the readings because there are sensors at altitudes varying from 132 feet to 457 feet. Most of the publicly available data appears to come from an altitude of about 230 feet, however, which would represent the area of the Space Launch System rocket where the core stage is attached to the upper stage. The entire stack reaches a height of about 370 feet above the ground.

Nov 11, 2022

Colonizing Giant Stars

Posted by in categories: futurism, space

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Giant Stars are often considered too hot and short lived to colonize, but it may be that they shall be the most powerful and pivotal systems in a future galaxy.

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Nov 11, 2022

Our Universe Trailer: Morgan Freeman Narrates The History Of Everything

Posted by in categories: education, space

When you need someone to narrate the history of the universe — and Mel Brooks is busy — you might as well go with Morgan Freeman. Not only has Freeman played God in “Bruce Almighty” and “Evan Almighty,” but he’s also told “The Story of God” and “The Story of Us” for National Geographic.

In “Our Universe,” Freeman is lending his voice to a new six-part nature documentary series for Netflix. As the title implies, this series is even bigger in scope than “The Story of Us.” It’s looking back at the whole history of the universe and how 13.8 billion years have led us to this moment.

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Nov 10, 2022

Scientists Tested Einstein’s Relativity on a Cosmic Scale, And Found Something Odd

Posted by in categories: physics, space

Everything in the Universe has gravity – and feels it too. Yet this most common of all fundamental forces is also the one that presents the biggest challenges to physicists.

Albert Einstein’s theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales.

General relativity has passed many years of observational tests, from Eddington’s measurement of the deflection of starlight by the Sun in 1919 to the recent detection of gravitational waves.

Nov 10, 2022

Matter–antimatter gigaelectron volt gamma ray laser rocket propulsion

Posted by in categories: particle physics, robotics/AI, space

face_with_colon_three circa 2012.


It is shown that the idea of a photon rocket through the complete annihilation of matter with antimatter, first proposed by Sänger, is not a utopian scheme as it is widely believed. Its feasibility appears to be possible by the radiative collapse of a relativistic high current pinch discharge in a hydrogen–antihydrogen ambiplasma down to a radius determined by Heisenberg’s uncertainty principle. Through this collapse to ultrahigh densities the proton–antiproton pairs in the center of the pinch can become the upper gigaelectron volt laser level for the transition into a coherent gamma ray beam by proton–antiproton annihilation, with the magnetic field of the collapsed pinch discharge absorbing the recoil momentum of the beam and transmitting it by the Moessbauer effect to the spacecraft. The gamma ray laser beam is launched as a photon avalanche from one end of the pinch discharge channel. Because of the enormous technical problems to produce and store large amounts of anti-matter, such a propulsion concept may find its first realization in small unmanned space probes to explore nearby solar systems. The laboratory demonstration of a gigaelectron volt gamma ray laser by comparison requiring small amounts of anti-matter may be much closer.

Nov 10, 2022

Gravitational waves could reveal the existence of quark matter

Posted by in categories: particle physics, space

Two neutron stars smashing together may produce a form of matter not seen before. If that happens, simulations suggest there would be a signal in gravitational waves resulting from the collision.

Nov 9, 2022

Cryptography’s Future Will Be Quantum-Safe. Here’s How It Will Work

Posted by in categories: computing, encryption, mathematics, quantum physics, security, space

In 1994, the computer scientist Peter Shor discovered that if quantum computers were ever invented, they would decimate much of the infrastructure used to protect information shared online. That frightening possibility has had researchers scrambling to produce new, “post-quantum” encryption schemes, to save as much information as they could from falling into the hands of quantum hackers.

Earlier this year, the National Institute of Standards and Technology revealed four finalists in its search for a post-quantum cryptography standard. Three of them use “lattice cryptography” — a scheme inspired by lattices, regular arrangements of dots in space.

Lattice cryptography and other post-quantum possibilities differ from current standards in crucial ways. But they all rely on mathematical asymmetry. The security of many current cryptography systems is based on multiplication and factoring: Any computer can quickly multiply two numbers, but it could take centuries to factor a cryptographically large number into its prime constituents. That asymmetry makes secrets easy to encode but hard to decode.

Nov 9, 2022

To Create a Universe in a Lab

Posted by in category: space

There are calculations which say the universe weighed 10 pounds (4.5 kg) and was no bigger than 10-²⁶ centimeters across before it stretched and sprawled into the great, heaving landscape we know of today. It’s strange to imagine that billions of fiery-tipped stars and billions of husky blue or rosy galaxies could emerge…