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: Drone in a Cage

Your weekly selection of awesome robot videos

3 min read
A drone inside of a protective geometric cage flies through a dark rain

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.

ICRA 2022: 23 May–27 May 2022, PHILADELPHIA
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Remembering 1982 IEEE President Robert Larson

He was a supporter of several IEEE programs including Smart Village

3 min read
A photo of two men in suits.  One behind the other.

Robert Larson [left] with IEEE Life Fellow Eric Herz, who served as IEEE general manager and executive director.

IEEE History Center

Robert E. Larson, 1982 IEEE president, died on 10 March at the age of 83.

An active volunteer who held many high-level positions throughout the organization, Larson was the 1975–1976 president of the IEEE Control Systems Society and also served as IEEE Foundation president.

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Take the Lead on Satellite Design Using Digital Engineering

Learn how to accelerate your satellite design process and reduce risk and costs with model-based engineering methods

1 min read
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Win the race to design and deploy satellite technologies and systems. Learn how new digital engineering techniques can accelerate development and reduce your risk and costs. Download this free whitepaper now!

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