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    PBS Space Time
            The Alchemy of Neutron Star Collisions
                
                    
                        
                            Season 5
                        
                    
                    
                        
                            Episode 23
                        
                    
                
            
            
            Carl Sagan’s famous words: “We are star stuff” refers to a mind-blowing idea – that most atomic nuclei in our bodies were created in the nuclear furnace and the explosive deaths of stars that lived in the ancient universe. Many heavy elements - includes most precious metals - were produced in an even more spectacular event: the collision of neutron stars.
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          14:05
        
      
    
  
  
                    
                
            New data is telling us that Neutron stars may make one of the most popular dark matter candidates.
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          15:14
        
      
    
  
  
                    
                
            Is Dark Energy Getting Weaker?
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          16:08
        
      
    
  
  
                    
                
            Here’s the story we like to tell about the beginning of the universe.
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          17:44
        
      
    
  
  
                    
                
            We’ve never seen a TDE in the Milky Way, but we’ve seen them in distant galaxies.
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          16:51
        
      
    
  
  
                    
                
            Let’s talk about quantum gravity experiments that can be done here on Earth!
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          19:25
        
      
    
  
  
                    
                
            What if gravity isn’t weirdly quantum at all, but rather … just a bit messy?
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          17:02
        
      
    
  
  
                    
                
            Have we reached the end of the line of discoverable elements?
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          15:32
        
      
    
  
  
                    
                
            Can we change the color of a black hole?
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          18:26
        
      
    
  
  
                    
                
            Learn about Nobel laureate Roger Penrose's idea of how consciousness is caused by quantum processes.
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          16:28
        
      
    
  
  
                    
                
            Faster than light travel may produce gravitational waves that we could see here on Earth.
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          20:07
        
      
    
  
  
                    
                
            All particles belong to two large groups: fermions and bosons.
        
        
    
    
                        
  
  
    
      
    
  
  
    
      
        
          16:11
        
      
    
  
  
                    
                
            Just how much stronger is this year’s solar activity going to get?