PBS Space Time
How Does Gravity Affect Light?
2021 • E7 Mar 8, 2021 14m
We know that gravity exerts its pull on light, and we have an explanation for why. Actually, we have multiple explanations that all predict the same thing. And at first glance, these explanations seem to describe completely different causes. So what is the true connection between light and gravity, or is truth, in fact, entirely relative?
