Meet the largest, most accurate 3D map of the universe

by Laura Domela

The universe is a big place. Strictly speaking, it’s the biggest place there is. And since so many bits of it are so far away from us, it’s hard to get a sense of the overall structure. The Sloan Digital Sky Survey has been working hard to detect and measure everything out there it possibly can, and the latest release is a breathtaking 3D map.

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This particular data release (covering about a third of the portion of the sky visible to the SDSS’s dedicated 2.5-meter telescope) features 535,995 newly observed galaxies, 102,100 quasars, and 116,474 stars. Whoa. And this is what it looks like if you fly though it at a quadrillion times the speed of light:
via DVICE

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featured chalk talk

Analog Output, Isolated Current, & Voltage Sensing Using Isolation Amplifiers

Sponsored by Mouser Electronics and Vishay

In this episode of Chalk Talk, Simon Goodwin from Vishay and Amelia Dalton chat about analog output, and isolated current and voltage sensing using isolation amplifiers. Simon and Amelia also explore the fundamental principles of current and voltage sensing and the variety of voltage and current sensing solutions offered by Vishay that can get your next design up and running in no time.

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Apr 27, 2026

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Meet the largest, most accurate 3D map of the universe

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