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Health & Science2h 1m ago
Human radio signals have been expanding into space for over a century, originating from early experimental transmissions, commercial broadcasting, military radar, and television.
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Milky Way galaxy
Who
Humanity
What
Human radio signals have been expanding into space for over a century, originating from early experimental transmissions, commercial broadcasting, military radar, and television.
When
Wed, 15 Jul 2026 12:30:59 GMT · 2h 1m ago
Where
Milky Way galaxy ·
Why
The expansion of human radio signals into space is a consequence of technological development and broadcasting activities over the past century.
The Frontline Impact
How this affects you
Human radio signals have only reached a tiny bubble of the Milky Way, meaning most of the galaxy is unaware of Earth's existence.
Story chain
7 events in this thread- Health & Science2h 1m agoHuman radio signals have been expanding into space for over a century, creating a bubble around Earth.Open article
- Health & Science2h 1m agoHuman radio signals have been expanding into space for over a century, changing the radio sky.Open article
- Health & Science2h 1m agoHuman radio signals have been expanding into space for over a century, creating a bubble of the Milky Way that is only a tiny fraction of the galaxy.Open article
- Health & Science2h 1m agoHuman radio signals have expanded into space for more than a century, changing the radio sky.Open article
- Health & Science2h 1m agoHuman radio signals have been expanding into space for over a century, reaching only a tiny bubble of the Milky Way.Open article
- Currently Reading2h 1m agoHuman radio signals have been expanding into space for over a century, originating from early experimental transmissions, commercial broadcasting, military radar, and television.
- Health & Science2h 1m agoHuman radio signals have expanded into space for more than a century, crossing only a tiny bubble of the Milky Way.Open article