Cosmic Exploration · discovery

Radio Waves from the Milky Way

1932 · Karl Jansky

Year
1932

Description

Jansky was hired to find sources of static troubling transatlantic telephone calls. One hiss rose and set four minutes early each day — sidereal time — and came from Sagittarius.

Discoverer

Referenced by

researcher

Open on the Cosmic Exploration shelf — the interactive card, the filters, and everything alongside it.

From the Discoveries database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.