Thank you mutant and A.T.for your replies.
No, I have never heard of Taylor-Wheeler's Space-time Physics but a Google search shows it to be well recommended
Gravity Illustrated Spacetime Edition also seems to be ideal if I can cope with a Doctoral Thesis.
You have both let me know I should be...
I have been reading an article about a theory of gravity that involves space being curved or warped.
An example was given where a heavy weight, representing the sun, is placed in the centre of a trampoline, and a golf ball, representing the earth, is caused to circle the centre of the...