Indiandefencereview.com May 12, 2026 • 13:00

Karl Jansky Was Investigating Radio Interference in 1933 When He Chased a Faint Hiss From the Sky That Changed the Course of Astronomy - Indian Defence Review

By Sarah Talbi

In 1933, Bell Labs engineer Karl Jansky discovered a mysterious radio signal from space while investigating interference in long-distance communications.

What began as a telecommunications engineering task quickly turned into one of the most influential discoveries in modern astronomy. Janskys work introduced a completely new way to observe the univer… [+3023 chars]

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Karl Jansky Was Investigating Radio Interference in 1933 When He Chased a Faint Hiss From the Sky That Changed the Course of Astronomy - Indian Defence Review

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