#3d map

[ancientstuff]

Fascinating possibility. Asks some tantalising questions.

[thepastisalreadywritten]

[vizcart]

Shaded relief of the Europe. This one will be changed soon with a shaped version where borders will be shown.

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[blasteffect]

DESI Map !

A slice of the 3D map of galaxies collected in the first year of the Dark Energy Spectroscopic Instrument (DESI) Survey. Earth is at the tip, with the furthest galaxies plotted at distances of 11 billion light-years. Each point represents one galaxy.

This version of the DESI map includes 600,000 galaxies — less than 0.1% of the survey's full volume.

Credit: DESI Collaboration/NOIRLab/NSF/AURA/R. Proctor

[ofruinsandmyth]

Saint Belec Slab | Oldest 3D Map in Europe

[warningsine]

The biggest ever 3D map of the universe, featuring more than 6m galaxies, has been revealed by scientists who said it raised questions about the nature of dark energy and the future of the universe.

The map is based on data collected by the Dark Energy Spectroscopic Instrument (Desi) in Arizona and contains three times as many galaxies as previous efforts, with many having their distances measured for the first time.

Researchers said that by using this map, they have been able measure how fast the universe has been expanding at different times in the past with unprecedented accuracy.

The results confirm that the expansion of the universe is speeding up, they added. However, the findings have also raised the tantalising possibility that dark energy – a mysterious, repulsive force that drives the process – is not constant throughout time as has previously been suggested.

Dr Seshadri Nadathur, a co-author of the work and senior research fellow at the University of Portsmouth’s Institute of Cosmology and Gravitation, said: “What we are seeing are some hints that it has actually been changing over time, which is quite exciting because it is not what the standard model of a cosmological constant dark energy would look like.”

Prof Carlos Frenk, from Durham University and a co-author of the research, said that if dark energy was indeed constant in time, the future of the universe was simple: it would expand on and on, for ever. But if the hints found in the map stood up, that would be called into question.

“Now all of that goes out the window and essentially we have to start from scratch, and that means revising our understanding of basic physics, our understanding of the big bang itself, and our understanding of the long-range forecast for the universe,” he said, adding that the new hints left open the possibility that the universe might undergo a “big crunch”.

The research, which has been published in a series of preprints – meaning it has yet to be peer-reviewed – reveals how the team first created the 3D map, then measured patterns in the distribution of galaxies that relate to sound waves that occurred in the early universe, known as baryon acoustic oscillations.

As the size of these patterns is known to be regular, the team was able to calibrate the distances to different galaxies in the map, allowing them to work out how fast the universe has been growing over the last 11bn years, with a precision better than 0.5% over all times, and better than 1% between 8bn and 11bn years ago.

Frenk said the precision itself of the measurements was notable given that galaxies could be billions of light years away, and billions of years old. “It’s mind-boggling that we can measure anything to a precision of 1%, which is precision you get in the laboratory in physics for high-precision measurements,” he said.

Andrew Pontzen, professor of cosmology at University College London and author of the book The Universe in a Box, who was not involved in the work, said Desi was one of a slew of exciting new astronomical surveys cataloguing the night sky, with one of the primary goals being to measure the rate at which our expanding universe has speeded up.

“Like measuring the acceleration of a car, charting the universe’s expansion tells us about the ‘engine’ powering cosmic acceleration. That engine is known as dark energy,” he said.

However, Pontzen noted that our knowledge of how dark energy operates was limited. “The new data, when combined with existing measurements, would seem to contradict the simplest possible explanations for dark energy,” he said.

“At face value, that’s an exciting step forward. But as the team themselves caution, there is a huge amount still to understand about this data and early results should be taken with a healthy grain of salt.”

[picpalace1]

Good morning everyone!! Check out this article. The largest 3D map of the universe EVER made: First breathtaking images from Euclid's 'cosmic atlas' are revealed - as scientists stitch together 14 million galaxies Hope you enjoy! Have a nice day!!

[visengine-d-s]

Chroma Key 🟢 Something great is coming 🔥✨

Learn more: https://visengine.com/

[olympicplayground]

3D Star Maps

Greek (or Modern Western) 88 Constellation Stars

Plate Cartee Projection

Orthographic Projection

[inspofromancientworld]

The Oldest Three-dimensional Map

Source: https://phys.org/news/2011-11-genographic-humans-migrated-africa-arabia.html

Water was far more important a consideration when traveling before more modern methods of traveling, so knowing how and where water traveled and pooled was extremely important to our ancestors in the distant past. Before paper or writing, there needed to be other ways of relaying information to others, some of which likely continued through to today in sketched maps into sand. More permanent maps were included in paintings on cave walls or etched into rocks or tusks.

Source: https://cosmosmagazine.com/history/archaeology/3d-map-in-palaeolithic-cave/

In December of 2024, a paper was released detailing the study of a sandstone cave near Paris, France called Ségognole 3. The cave was rediscovered in the 1980s and was known for 'sexual figuration' and the representation of horses. More recently, as detailed in the 2024 paper, it was noticed that the floor of the cave had been deliberately etched so that it represents the landscape, especially the watersheds, of the area around the cave. This is thought to have happened about 13,000 years ago and is likely the oldest map of this type that we know of. This places it in the Paleolithic, or Old Stone Age, which was from about 3.3 million to 12,000 years ago.

Source: https://www.researchgate.net/figure/Segognole-3-is-one-of-4-engraved-grottoes-numbered-Segognole-2-through-5-in-an_fig2_267939409

The map as some features that don't appear to be natural as well as representations of the natural world around the cave. It is thought that some of these represent efforts by early humans to alter the world around them, or possibly good shelters, though it is possible these markings have a deeper meaning, especially in relation to the other carvings in the cave.

This cave also demonstrates that people were able to control water in such a way that it carved the waterways into the cave floor. It wasn't known prior to this that early humans had such a deep understanding and control over the hydrological processes and their effects on sandstone to get the results desired.

[travelella]

Nuremberg, Germany

Winston Tjia

[lepton-software]

RF Planning for 5G Networks: Challenges and Solutions

The advent of 5G networks guarantees low latency and massive connectivity, transforming communications. However, maximizing the capability of 5G requires meticulous planning for RF. This article focuses on the troubles and solutions related to RF plans for networks that help 5G. It focuses on important factors like 5G network , RF planning software, in addition to telecom management software for networks.

Click to read more about RF Planning for 5G Networks: Challenges and Solutions

[vizcart]

🗺️ 𝗠𝗔𝗣 𝗜𝗡𝗙𝗢 Toulouse. GSGS (Series); 2738. 2nd ed.,Great Britain. War Office. General Staff. Geographical Section. 1943. Source: Mapster

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