23/06/2026
Ever wondered what a black hole sounds like? 🤔
Even though space is a vacuum, NASA has found a way to make the cosmos "audible." By converting gravitational waves from a supermassive black hole—located at the heart of the Perseus galaxy cluster—into sound frequencies, we can finally hear its deep, roaring hum. 🎧
These waves ripple through surrounding clouds of hot gas, creating a pitch that is a staggering 57 octaves below middle C. To put that in perspective, it's the lowest note ever detected in the entire universe!
Discoveries like this remind us that the universe isn't silent—it's full of stories waiting for us to listen. 🌌👂.