template: ### Instruction: Rewrite this English sentence to give a better translation.
  
  ### English: Then, in the year 2025, the LISA satellite was to be launched, and it was to be able to observe the last fifteen minutes of the life of two supermassive black holes.
  ### English rewrite: But LISA could see the final stages of two super-massive black holes earlier in the universe's history, the last 15 minutes before they fall together.