The most advanced telescope ever created was broken from day 1…

17 May 2026 · 1 min

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1:17

The video narrates the story of the Hubble Space Telescope’s launch in 1990 with a critical flaw: its primary mirror was misfigured by about 2 µm due to a miscalibrated testing device, resulting in blurry, unusable images. The narrator explains why such a tiny error crippled the telescope’s optics, likening it to wearing the wrong prescription glasses in space. Despite the initial perception of a massive failure, NASA organized a 1993 Space Shuttle servicing mission that installed corrective optics (the “Hubble glasses”), restoring focus. After the repair, Hubble produced sharp, iconic images and enabled groundbreaking discoveries, turning an early disaster into one of the most celebrated scientific achievements.

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In 1990, the most advanced space telescope ever built launched into orbit with a flaw. This was the Hubble Space Telescope. It was designed to capture the universe in stunning detail. Galaxies, nebulae, deep space. But when the first images came back, they were blurry. Not slightly off. Completely unusable after years of work, billions spent. Something was wrong. Engineers investigated. The problem was shocking. The main mirror, the most critical part of the telescope, was shaped incorrectly. By a tiny fraction. About 2 micrometers, less than the thickness of a human hair. But in space optics, that was enough to ruin everything. The telescope couldn't focus properly. It was like wearing the wrong prescription glasses, in orbit, with no easy fix. The mistake came from a testing device. It was miscalibrated, and no one caught it. At first, it was seen as a massive failure, but NASA didn't give up. In 1993, astronauts launched a repair mission. They installed corrective optics, essentially giving Hubble glasses. After that, everything changed. Sharp images, deep space discoveries, some of the most iconic photos ever taken. A failure turned into one of the greatest scientific successes, all because a tiny error was corrected instead of ignored.