Earth's Fading Voice: Our Radio Bubble's 119-Light-Year Journey into Space

• For over a century, human radio signals have been traveling into space, forming an expanding 'Earth radio bubble'.
• The first public radio broadcast by Reginald Aubrey Fessenden in 1906 marked the beginning of this cosmic journey.
• Traveling at the speed of light, the radio bubble currently extends 119 light-years from Earth, encompassing 75 star systems including Proxima Centauri.
• Despite its reach, signals weaken drastically with distance, making it highly improbable for extraterrestrial civilizations to detect them amidst cosmic noise.
• Modern communication methods like fiber optics and satellites are reducing the amount of radio waves leaking into space, suggesting Earth's cosmic 'voice' may eventually fade.

Why It Matters: Humanity's radio signals have traveled 119 light-years, but our cosmic voice is fading and likely undetectable by aliens.