Relativity is the idea that time and space can behave differently depending on your perspective. It is notoriously difficult to understand, but in this series, I explain the methods that helped me understand it to the best of my ability. This episode is about time dilation, in which time passes at different rates depending on your reference frame.

Clarification: The international space station is technically not an inertial reference frame. It's orbiting, which is a form of acceleration. This doesn't make much of a difference, so I used it as an example, because it's a very tangible way of understanding. It's worth noting though, that the time dilation on the ISS is partially caused by its velocity, but is also partially caused by the earth's gravitational effects. Gravitational time dilation is part of general relativity though, so I deliberately chose not to mention it for the sake of the example.

Intro song: 1812 overture by Tchaikovsky (specifically the U Vorot Vorot part)
Outro song: Waltz of the Flowers also by Tchaikovsky