(Please note that this is not the speed of light in a vacuum but the speed of light in a medium.) So, these gamma rays are moving faster than light in a medium, through the jets, and appear to be going backward through time. This is so interesting to me because it shows that things can move faster, in a medium, than the speed of light. Although it's a lot less interesting than I thought because the first time I read it I thought that it was actually talking about the speed of light in a vacuum. That was yesterday. When I re-read it today I realized I misunderstood. Links: Faster-Than-Light Speeds Could Be Why Gamma-Ray Bursts Seem to Go Backwards in Time https://www.sciencealert.com/faster...gamma-ray-bursts-seem-to-go-backwards-in-time Gamma Rays May Move Faster Than Light, Causing Them To Go ‘Backwards In Time,’ Say Researchers https://www.inquisitr.com/5931257/gamma-rays-faster-light-time-travel/
