For years, scientists have been struggling to explain bizarre sounds - some repeating, some heard only once - that fill the atmosphere of our planet. From bewildering hums to worrying sonic booms and bloops, yes, bloops -- the air is literally filled with outlandish acoustic phenomena. And most of these sounds still leave researchers scratching their heads.
Have you ever heard, for example, that astronomers found a singing black hole? Scientists say that the black hole has been performing the longest-lasting symphony known to us humans, and this symphony is being played at the lowest note in the universe at that! Date: 2022-04-19
