A black hole's spin can spawn a cloud of the lightest particles that ring like a bell, sending gravitational waves through space. If we hear this ringing, we'll catch elusive dark matter for the first time.
🎯 The gravitational waves from axions are astonishingly pure—like a tuning fork note sounding for millions of years without a single flaw.
🎬 In 'Interstellar,' gravitational waves served as a bridge across time; here, we're catching the real melody sung by black holes.