Let's say you're in a spaceship, traveling at 99.95% the speed of light. Korvo reminds us that light always travels at a constant rate, or c. Physics also speculates that the closer and closer you get to this light constant, the heavier and longer you get -- length contraction, supported by Einstein's theory of special … Read more

Let's say you're in a spaceship, traveling at 99.95% the speed of light. Korvo reminds us that light always travels at a constant rate, or c. Physics also speculates that the closer and closer you get to this light constant, the heavier and longer you get -- length contraction, supported by Einstein's theory of special … Read more

What do you mean 'why is time relative?' Relative to what?  Do you mean when talking about general and/or special relativity??  Why it is relative to gravity and velocity and speed of light and mass???

Or why is it relative to the observer?