1,3 billion years ago: Black Holes United

"The two shall become one hole", Genesis 2:24
("Καὶ ἔσονται οἱ δύο εἰς τρύπαν μίαν", Γένεσις, 2:24)
‪#‎blackholes‬ ‪#‎LIGO‬ ‪#‎gravitationalwaves‬