Yeah, I always find this curious. There is a lot of collisions and movement in the grand universe. How is it novel that there is sound emtited if you have the correct listening device?
I think it’s something like pareidolia, where you lay back and look up at the clouds and think of how they look like cows,houses, trains, etc.
Your AM radio is producing odd sounds. Is it your neighbors microwave or is ET calling to let you know he wants to borrow your bike?