PBS Spacetime has some really nice videos about Gravity (Newtonian vs GR)
<a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=NblR01hHK6U" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=NblR01hHK6U</a>