The James Webb Space Telescope is parked a million miles from Earth and runs on less power than a household kettle — and its deployment sequence had 344 single points of failure, any one of which coul
The James Webb Space Telescope operates in a remote orbit 1.5 million kilometers from Earth, relying on complex engineering that required 344 single points of failure to be managed during deployment. The telescope's design allows it to observe the early universe by maintaining extreme cold for its infrared instruments.
Why it matters
The success of the JWST demonstrates the limits of human engineering and the high-stakes nature of deep-space exploration.
A machine that had to execute hundreds of flawless maneuvers in the vacuum of space—with no possibility of repair—is now our window into the cosmos's deepest past.
By Space War Editorial Team · Editorial process
The James Webb Space Telescope is often described by what it can see: galaxies forming near the dawn of time, planets around other stars, dust clouds where stars are being born. But the more astonishing part may be how little room there was for error before any of that science could begin.
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