An exploration of the possibility of artificial star systems, galaxies and universes and how to hypothetically construct them.
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What truly defines “Quality of Life” (QoL), and why we have titled the SRI IV World Congress on it?QoL is a broad concept, including all of the aspects of the life of us, human inhabitants of the third planet of this Solar System. Traditionally, we define QoL through the essentials—food, shelter, health, and education. These are the pillars of economic and cultural development, and they are non-negotiable. Yet, at Space Renaissance, we believe QoL aims higher. It is the freedom to pursue our highest ideals, to have a beautiful life, to explore spirituality, and to seek a global reduction in suffering. Interestingly, the perception of QoL varies wildly across our globe today. The Western post-industrial societies are often clouded by a lack of confidence and a fading hope for what lies ahead. The Eastern emerging societies, fueled by rapid industrial growth, look toward the horizon with immense anticipation. If we could measure QoL through the lens of hope, these emerging societies might actually outrank the West. Why? Because the belief that one is part of a “great project”—one that glorifies human intelligence and potential—is the ultimate antidote to social suffering.
Whether we progress or regress, fall into crisis or rise in a renaissance, it all depends on the mass-psychological mood of the people. When survival is secured, and economic growth creates opportunities for all, social fear dissolves. And as John Lennon famously sang, when fear fades, we finally “give peace a chance.”
We align ourselves with this progressive spirit, like a modern Promethean manifesto. However, we must be realistic: this hope has an expiration date. Without the launch of civil space development by 2030, the “closed world” will inevitably reach its limits. Eastern hopes will be dashed, and Western lifestyles will suffer a sharp decline.
If humankind is to explore deep space, one small passenger should not be left behind: microbes. In fact, it would be impossible to leave them behind, since they live on and in our bodies, surfaces and food. Learning how they react to space conditions is critical, but they could also be invaluable fellows in our endeavor to explore space.
Microorganisms such as bacteria and fungi can harvest crucial minerals from rocks and could provide a sustainable alternative to transporting much-needed resources from Earth.
Researchers from Cornell and the University of Edinburgh collaborated to study how those microbes extract platinum group elements from a meteorite in microgravity, with an experiment conducted aboard the International Space Station. They found that “biomining” fungi are particularly adept at extracting the valuable metal palladium, while removing the fungus resulted in a negative effect on nonbiological leaching in microgravity.
Neutron scattering has provided a new and broader view of the twirling collective atomic vibrations in a magnetic crystal.
Phonons—quantized conveyors of sound and heat in solids—are usually visualized as collective vibrations in which atoms simply bounce back and forth, almost as if they were weights on springs. However, atoms can sometimes form “chiral phonons” that twirl and swivel clockwise or counterclockwise, in a way that resembles a coordinated dance [1]. When these circular, chiral motions entrain ionic charge, they generate a magnetic moment, which suggests that there might be a way to control sound and heat using magnetic fields. Until recently, this magnetic dance was primarily observed using optical techniques, granting access to only one corner of the “stage”—the point in the phonon’s momentum space where the momentum is nearly zero. Song Bao of Nanjing University in China and his collaborators have now broadened the view of momentum space by using inelastic neutron spectroscopy.
While sifting through the extensive data collected by NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft over the last decade, scientists discovered a familiar type of electromagnetic signal commonly caused by lightning. This rare find represents the first direct indication of lightning activity on Mars. The team recently published their findings in Science Advances, where they describe the event and why it’s so difficult to detect lightning-like activity on Mars.
Whistler waves are low-frequency radio wave signals generated by lightning, which create an impulse that propagates through a planet’s magnetosphere, following along the magnetic field lines. The whistler waves disperse due to the slower velocity of the lower frequencies through the plasma of the ionosphere and magnetosphere. These waves are typical on Earth, but have also been observed on Jupiter, Saturn and Neptune. All of these planets all possess strong magnetic fields and corresponding magnetospheres, facilitating the movement of whistler waves.
Mars, on the other hand, does not have a global, Earth-like magnetic field. This is because the internal activity that causes these magnetic fields ceased on Mars billions of years ago. This may contribute to the fact that lightning-like discharges in the Martian atmosphere have not yet been observed. But lightning-like activity on Mars is not impossible.
“By combining different feedstocks, like metal and ceramics, in the printing process, we found that the final material is really sensitive to the environment,” said Sizhe Xu. [ https://www.labroots.com/trending/space/30260/3d-printing-mo…habitats-2](https://www.labroots.com/trending/space/30260/3d-printing-mo…habitats-2)
How can lunar regolith be used to construct future habitats on the Moon? This is what a recent study published in Acta Astronautica hopes to address as a team of scientists investigated novel methods for using lunar regolith for making structures on the lunar surface. This study has the potential to help scientists, engineers, mission planners, and future astronauts develop methods for working and living on the Moon, which comes as NASA’s Artemis program plans to land humans on the Moon in 2028.
For the study, the researchers examined how a laser 3D printing method called laser directed energy deposition (LDED) could be used for manufacturing structures using lunar simulant under a myriad of environments, specifically lunar conditions of zero atmosphere, oxygen, and complete vacuum. The lunar simulant used for the experiments is known as LHS-1 (lunar highland regolith simulants), with the lunar highlands being the lighter-colored mountainous regions of the Moon as seen from Earth, as opposed to the volcanic regions of the Moon that are darker in appearance.
Along with the environmental conditions, the researchers also examined how printing LHS-1 on various types of surfaces yielded different results. They also examined laser speed, scanning power, and the final microstructure products. In the end, the researchers found that alumina-silicate ceramic surfaces and high temperatures produced the most promising structures but cautioned that laboratory conditions vary from the real-world environment on the Moon.
Astronomers using the MeerKAT radio telescope in South Africa have discovered the most distant hydroxyl megamaser ever detected. It is located in a violently merging galaxy more than 8 billion light-years away, opening a new radio astronomy frontier.
Hydroxyl megamasers are natural “space lasers”—extremely bright radio-wavelength emissions produced when hydroxyl molecules in gas-rich, merging galaxies crash into one another. These cosmic collisions compress gas and stimulate large reservoirs of hydroxyl molecules to amplify radio emission.
The physical mechanism is very similar to lasers on Earth, but operates at a much longer wavelength of light of about 18 centimeters, rather than the optical light that our eyes can see. When this special radio light is exceptionally bright, it is termed a megamaser—a “cosmic beacon” that can be seen across vast stretches of the universe.
An exploration of the idea of an all powerful matrioshka brain equipped with a Nicoll-Dyson beam controlling and ruling an entire galaxy.
My Patreon Page:
/ johnmichaelgodier.
My Event Horizon Channel:
/ eventhorizonshow.
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