Dingle's disproof was based on the twin paradox, claiming that it was in fact a contradiction. He argued that the theory must be false since it demands that each of two clocks works faster than the other.

Most modern astrophysicists hold that in fact it was Dingle's reasoning that was faulty; and that his disproof rested on a misunderstanding of the mathematics of special relativity.

- Dingle's book "Science at the Crossroads": http://www.nationalism.org/russamos/dingle/Introduction.html
- A mathematical explanation of the twin "paradox" and Dingle's misconception thereof can be found at: http://www.mathpages.com/rr/s4-07/4-07.htm