What is the theory of general relativity?
Gravitational Time Dilation: Why Does Gravity Slow Time?
A new clock shows how gravity warps time — even over tiny distances
Can burping black holes reveal the true fabric of the universe?
PBS Space Time: Does Time Cause Gravity?
Where Do Space, Time and Gravity Come From?
What are Gravitational Waves?, LIGO Lab
Gravity
Time wish, Gravity Falls Wiki
Isaac Newton and the “Hypotheses non Fingo” –