Two black holes, the densest thing in the Universe, one with a mass of 29 Suns and one with a mass of 36 Suns, whirling around each other 100 times per second before they collide.
Dvije crne rupe, najgušća tvar u Svemiru, jedna mase 29 sunaca i druga mase 36 sunaca, vrtjele su se jedna oko druge 100 puta u sekundi prije nego li su se sudarile.