Space Colonization is Required for the Long-Term Survival of Humanity, but it also has ethical Dimensions. Posted on BigThink, direct link at https://www.searchforlifeintheuniverse.com/post/humanity-s-l…lonization
Category: space – Page 240
A decent vid concerning the current space ideas. There are just a few misconceptions (You do not need the Moon to get to Mars) and generalities (There are many more than thousands of asteroids), but otherwise not bad.
Modern space exploration and the global competition to Mars sparks civil and military innovation.
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We investigate signal propagation in a quantum field simulator of the Klein–Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates. By measuring local phononic fields after a quench, we observe the propagation of correlations along sharp light-cone fronts. If the local atomic density is inhomogeneous, these propagation fronts are curved. For sharp edges, the propagation fronts are reflected at the system’s boundaries. By extracting the space-dependent variation of the front velocity from the data, we find agreement with theoretical predictions based on curved geodesics of an inhomogeneous metric. This work extends the range of quantum simulations of nonequilibrium field dynamics in general space–time metrics.
SABINE HOSSENFELDER: My name is Sabine Hossenfelder. I’m a physicist and Research Fellow at the Frankfurt Institute for Advanced Studies, and I have a book that’s called “Existential Physics: A Scientist’s Guide to Life’s Biggest Questions.”
NARRATOR: Why did you pursue a career in physics?
HOSSENFELDER: I originally studied mathematics, not physics, because I was broadly interested in the question how much can we describe about nature with mathematics? But mathematics is a really big field and I couldn’t make up my mind exactly what to study. And so I decided to focus on that part of mathematics that’s actually good to describe nature and that naturally led me to physics. I was generally trying to make sense of the world and I thought that human interactions, social systems are a pretty hopeless case. There’s no way I’ll ever make sense of them. But simple things like particles or maybe planets and moons, I might be able to work that out. In the foundations of physics, we work with a lot of mathematics and I know from my own experience that it’s really, really hard to learn. And so I think for a lot of people out there, the journal articles that we write in the foundations of physics are just incomprehensible.
Better understanding the formation of swirling, ring-shaped disturbances—known as vortex rings—could help nuclear fusion researchers compress fuel more efficiently, bringing it closer to becoming a viable energy source.
The model developed by researchers at the University of Michigan could aid in the design of the fuel capsule, minimizing the energy lost while trying to ignite the reaction that makes stars shine. In addition, the model could help other engineers who must manage the mixing of fluids after a shock wave passes through, such as those designing supersonic jet engines, as well as physicists trying to understand supernovae.
“These vortex rings move outward from the collapsing star, populating the universe with the materials that will eventually become nebulae, planets and even new stars—and inward during fusion implosions, disrupting the stability of the burning fusion fuel and reducing the efficiency of the reaction,” said Michael Wadas, a doctoral candidate in mechanical engineering at U-M and corresponding author of the study.
A pair of harvesting robots are picking raspberries in Portugal, demonstrating the ability of tech to help combat seasonal labor shortages.
Sea of Green is a marijuana growing method in which numerous little plants are produced in close proximity per square meter of area. The advantage of developing this way is that plants spend less time in the vegetation stage while still creating as many bud sites per area volume. Buds mature faster in SOG, resulting in an additional yield yearly.
Furthermore, clones are typically used in SOG. This guarantees that all of the plants have the same characteristics (growing speed and height.) and that your SOG grows to have a lovely even canopy. You can also grow weed seeds for sale; however, only seeds from the same strain should be used. Avoid tall, lanky Sativa if possible. Also, keep your plants at the same level beneath your grow lights to maintain consistent development.
How many plants can you expect to grow per square foot with SOG?
Including space.
The DARPA Biomanufacturing: Survival, Utility, and Reliability beyond Earth (B-SURE) program aims to address foundational scientific questions to determine how well industrial bio-manufacturing microorganisms perform in space conditions. http://ow.ly/3Nya50On2za
Mission to resurrect space telescope 185 milion miles from Earth.
The ambitious plan is the first attempt of a private company to revive expired astronomical tools so far way.