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Watch Secrets of the Universe Season 1 Episode 7 Online

  • 2/10
  • Subtitles: English

This is the story of two of the biggest scientific breakthroughs of the 21st century, told by the incredible scientists who made them happen. The first is LIGO’s measurement of gravitational waves coming from a black hole merger, and the second, the Event Horizon Telescope’s image of a black hole.