Time dilation is a real thing, folks. It's not just a plot device for bad science fiction.
When you're in a strong gravity field, time passes more slowly for you relative to someone else. This is called gravitational time dilation. It's like your clocks are ticking at a different pace, but only relative to someone else. Make sense?
Now, imagine you're on a planet with a really strong gravity. You're basically stuck in a time-warp. Time passes slowly for you, but for someone observing from a distance, it's like you're stuck in a time-slowdown.
But wait, it gets even stranger. What if you're in orbit around that same planet? Time is passing normally for you, but for someone on the planet, you're like a time-traveling speed demon.
Time dilation: it's like being a time-traveling paradox factory.