The Cosmological Supercomputer

How the Bolshoi simulation evolves the universe all over again

12 min read
the Bolshoi simulation
Sources: Simulation, Anatoly Klypin and Joel R. Primack; visualization, Stefan Gottlöber/Leibniz Institute for Astrophysics Potsdam

Bolshoi simulation models

Sources: Simulation, Anatoly Klypin and Joel R. Primack; Visualization, Stefan Gottlöber/Leibniz Institute for Astrophysics Potsdam
Cosmic web: The Bolshoi simulation models the evolution of dark matter, which is responsible for the large-scale structure of the universe. Here, snapshots from the simulation show the dark matter distribution at 500 million and 2.2 billion years [top] and 6 billion and 13.7 billion years [bottom] after the big bang. These images are 50-million-light-year-thick slices of a cube of simulated universe that today would measure roughly 1 billion light-years on a side and encompass about 100 galaxy clusters. Click image to enlarge.

When it comes to reconstructing the past, you might think that astrophysicists have it easy. After all, the sky is awash with evidence. For most of the universe’s history, space has been largely transparent, so much so that light emitted by distant galaxies can travel for billions of years before finally reaching Earth. It might seem that all researchers have to do to find out what the universe looked like, say, 10 billion years ago is to build a telescope sensitive enough to pick up that ancient light.

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Video Friday: Turkey Sandwich

Your weekly selection of awesome robot videos

4 min read
A teleoperated humanoid robot torso stands in a kitchen assembling a turkey sandwich from ingredients on a tray

Video Friday is your weekly selection of awesome robotics videos, collected by your friends at IEEE Spectrum robotics. We also post a weekly calendar of upcoming robotics events for the next few months. Please send us your events for inclusion.

CoRL 2022: 14–18 December 2022, AUCKLAND, NEW ZEALAND

Enjoy today's videos!

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5 min read
Four examples of Nvidia's Instant NeRF 2D-to-3D machine learning model placed side-by-side.

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NVIDIA

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BAE Systems

This is a sponsored article brought to you by BAE Systems.

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