What is gravity?

 The notion of gravity is the simplest and most intuitive phenomenon understood by humans, but gravity is one of the most complex phenomena we observe. I am sure everyone has heard the famous story of Newton sitting under an apple tree.

 The discoveries made by newton were groundbreaking and have somewhat shaped the mechanical physics we use in most of the macroscopic objects around us. But the idea of space-time fabric and gravitational waves, as proposed by Einstein's general theory of relativity, is surely counter-intuitive(at least for me!). 

I would here take the  opportunity to share a wonderful article that helped me understand gravity:

 https://www.amnh.org/explore/videos/space/gravity-making-waves/newton-einstein-gravity#:~:text=He%20theorized%20that%20a%20mass,calling%20the%20result%20space%2Dtime.