• Einstein summed up mass and energy in his formula E = mc squared
  
• Einstein later/ eventually married to his cousin (ew).
  
• He believes that spending the years of wars by hisself allowed him to be productive scientifically
  
• Newton's law of gravity: if one changed the distribution of matter in one region, the change would be felt everywhere else in the universe.
  
• The farther other galaxies are from us, the faster they're moving away.
  

• What made Einstein realize that there was a relationship between acceleration and gravitational field?
  
• Who is Euclid?
  
• Is it possible for the universe to expand or contract?
  
• Why did Einstein call the cosmological constant the greatest mistake of his life?
  

• Postulate: to assume or claim as true
• Scruple:A unit of apothecary weight
• Primeval: belonging to the first ages
  

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• This section of the book is about the conclusions Einstein was drawing about the galaxy in his time