An international research group led by Associate Professor Tomoaki Ishiyama of Chiba University succeeded in the world’s largest dark matter structure formation simulation using all CPU cores of the national astronomical observatory supercomputer “Atelui II”, and simulated more than 100 terabytes. The data has been published on the Internet cloud. Currently, large-scale astronomical survey observations using the Subaru Telescope of the National Astronomical Observatory of Japan are underway, but in order to extract and verify a lot of information from the observations, a huge simulated catalog of galaxies and active galactic nuclei is required. This data is positioned as basic data for that purpose, and will be useful for research aimed at elucidating the large-scale structure of the universe and galaxy formation.
The results of this study were published in the Monthly Notices of the Royal Astronomical Society published by the Royal Astronomical Society of the United Kingdom in September 2021.
Simulation: Tomoaki Ishiyama
Visualization: Hirotaka Nakayama
National Astronomical Observatory 4D Digital Space Project
The world’s largest “simulated universe” is released-Toward the elucidation of the large-scale structure of the universe and galaxy formation-
An amazing story
The famous Italian diver, Enzo Majorca, swam in the warm waters of the Siracusa sea and chatted with his daughter Rossana, who had stayed on the boat.
Ready to submerge, he felt something tap lightly on his back. He turned and saw a dolphin. He realized then that he didn’t want to play, but to express something.
The animal dove and Enzo followed.
About 12 meters deep, trapped in an abandoned net, was another dolphin.
Majorca quickly asked her daughter to pick up her diving knives. In a few minutes the two managed to free the dolphin, which, at the limit of its strength, managed to emerge, emitting an “almost human scream” (so described Majorca).
A dolphin can only resist underwater for up to 10 minutes, then it drowns.
The freed dolphin, still stunned, was controlled by Enzo, Rossana and the other dolphin.
Then came the surprise: It was a dauphin, which soon gave birth to a baby.
The male circled them and, stopping in front of Enzo, touched his cheek (as if it were a kiss), in a gesture of gratitude… And they walked away.
Enzo Mallorca ended his speech saying: “Until man learns to respect and dialogue with the animal world, he will never be able to know his true role on this Earth.”
This is the story of a stork that was shot by a hunter and was never able to fly again. But she is not dead and there is a farm where they treat her.
Her husband is doing well and every year he continues to cover 14,000 kilometers in the annual migration of the storks. And he returns to his waiting wife. And they still have babies that get into the normal rhythm of storks, and migrate with their father. He migrates, and the following year he returns to his wife.
And the story lasts for 26 years…
This is the firework that Japan had prepared for the opening of the 2020 Olympic Games.