Einstein's general relativity says gravity is spacetime curvature, but what does that mean? Let's take a look at how gravitational time dilation results in an effect that looks a lot like gravity. The flow of time brings mass together.
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VIDEO ANNOTATIONS/CARDS

What the HECK is Time?!
   • What the HECK is Time?! (in Einstein’...  

Why Does Stuff Happen? Gradients!
   • Why Does Stuff Happen? Gradients!  

General Relativity Playlist:
   • Gravity as Spacetime Curvature  
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RELATED YOUTUBE VIDEOS

PBS Space Time on Building Clock:
   • General Relativity & Curved Spacetime...  

Eugene on Gravitational Time Dilation:
   • Gravitational Time Dilation causes gr...  
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OTHER SOURCES

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Fluid Simulation:
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LINKS TO COMMENTS

   • Are Orbits like this even POSSIBLE?!  
   • Are Orbits like this even POSSIBLE?!  
   • Are Orbits like this even POSSIBLE?!