1 00:00:00,000 --> 00:00:04,000 [Music throughout] 2 00:00:04,000 --> 00:00:08,000 [SCENE DESCRIPTION: 22 nearby black hole systems appear to scale] 3 00:00:08,000 --> 00:00:12,000 [SCENE DESCRIPTION: Each system has a star and a black hole] 4 00:00:12,000 --> 00:00:16,000 [SCENE DESCRIPTION: Which appears at the center of a cloudy disk] 5 00:00:16,000 --> 00:00:20,000 6 00:00:20,000 --> 00:00:24,000 [SCENE DESCRIPTION: Pop-up of system MAXI J1659] 7 00:00:24,000 --> 00:00:28,000 [SCENE DESCRIPTION: Fastest-known orbit of an accreting black hole] 8 00:00:28,000 --> 00:00:32,000 [SCENE DESCRIPTION: 29,000 light-years away, 2.4 hours to orbit, 5-solar-mass black hole] 9 00:00:32,000 --> 00:00:36,000 [SCENE DESCRIPTION: Pop-up of system A0620-00] 10 00:00:36,000 --> 00:00:40,000 [SCENE DESCRIPTION: Closest-known accreting black hole system] 11 00:00:40,000 --> 00:00:44,000 [SCENE DESCRIPTION: 3,300 light-years away, 7.8 hours to orbit, 6.6-solar-mass black hole] 12 00:00:44,000 --> 00:00:48,000 [SCENE DESCRIPTION: Pop-up of system Cygnus X-1] 13 00:00:48,000 --> 00:00:52,000 [SCENE DESCRIPTION: First confirmed black hole, 7,200 light-years away] 14 00:00:52,000 --> 00:00:56,000 [SCENE DESCRIPTION: 5.6 days to orbit, 21-solar-mass black hole, 40-solar-mass companion star] 15 00:00:56,000 --> 00:01:00,000 16 00:01:00,000 --> 00:01:04,000 [SCENE DESCRIPTION: Pop-up of system GRS 1915] 17 00:01:04,000 --> 00:01:08,000 [SCENE DESCRIPTION: Widest-known accreting black hole system, 8,200 light-years away] 18 00:01:08,000 --> 00:01:12,000 [SCENE DESCRIPTION: 33.5 days to orbit, 15-solar-mass black hole] 19 00:01:12,000 --> 00:01:16,000 20 00:01:16,000 --> 00:01:20,000 [SCENE DESCRIPTION: Large binaries orbit at slower speeds than small ones] 21 00:01:20,000 --> 00:01:24,000 22 00:01:24,000 --> 00:01:28,000 23 00:01:28,000 --> 00:01:32,000 NASA 24 00:01:32,000 --> 00:01:36,619 NASA