It is free for anyone to explore it on the cloud as well
From:
National Institutes of Natural Sciences
September 10, 2021 -- Uchuu
(meaning "Outer Space" in Japanese) is the largest and most realistic
simulation of the Universe to date. The Uchuu simulation consists of 2.1
trillion particles in a computational cube an unprecedented 9.63 billion
light-years to a side. For comparison, that's about three-quarters the distance
between Earth and the most distant observed galaxies. Uchuu will allow us to
study the evolution of the Universe on a level of both size and detail
inconceivable until now.
Uchuu focuses on the large-scale structure
of the Universe: mysterious halos of dark matter which control not only the
formation of galaxies, but also the fate of the entire Universe itself. The
scale of these structures ranges from the largest galaxy clusters down to the
smallest galaxies. Individual stars and planets aren't resolved, so don't
expect to find any alien civilizations in Uchuu. But one way that Uchuu wins
big in comparison to other virtual worlds is the time domain; Uchuu simulates
the evolution of matter over almost the entire 13.8 billion year history of the
Universe from the Big Bang to the present. That is over 30 times longer than
the time since animal life first crawled out of the seas on Earth.
Julia F. Ereza, a Ph.D. student at
IAA-CSIC who uses Uchuu to study the large-scale structure of the Universe
explains the importance of the time domain, "Uchuu is like a time machine:
we can go forward, backward and stop in time, we can 'zoom in' on a single
galaxy or 'zoom out' to visualize a whole cluster, we can see what is really
happening at every instant and in every place of the Universe from its earliest
days to the present, being an essential tool to study the Cosmos."
An international team of researchers
from Japan, Spain, U.S.A., Argentina, Australia, Chile, France, and Italy
created Uchuu using ATERUI II, the world's most powerful supercomputer
dedicated to astronomy. Even with all this power, it still took a year to
produce Uchuu. Tomoaki Ishiyama, an associate professor at Chiba University who
developed the code used to generate Uchuu, explains, "To produce Uchuu we
have used ... all 40,200 processors (CPU cores) available exclusively for 48
hours each month. Twenty million supercomputer hours were consumed, and 3
Petabytes of data were generated, the equivalent of 894,784,853 pictures from a
12-megapixel cell phone."
Before you start worrying about download
time, the research team used high-performance computational techniques to
compress information on the formation and evolution of dark matter haloes in
the Uchuu simulation into a 100-terabyte catalog. This catalog is now available
to everyone on the cloud in an easy to use format thanks to the computational
infrastructure skun6 located at the Instituto de Astrofísica de Andalucía
(IAA-CSIC), the RedIRIS group, and the Galician Supercomputing Center (CESGA).
Future data releases will include catalogues of virtual galaxies and
gravitational lensing maps.
Big Data science products from Uchuu
will help astronomers learn how to interpret Big Data galaxy surveys expected
in coming years from facilities like the Subaru Telescope and the ESA Euclid
space mission.
https://www.sciencedaily.com/releases/2021/09/210910121651.htm
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