eli5: What does it mean when people say that time works differently in space?

Question

I’ve heard people talk about how people living on a space station their whole lives would age at different rates to people on Earth but…how?

In: Physics

Answer 1

Technically the heavier the gravity the slower (or is it faster) the time.

So hypothetically if you sat next to a black hole for 2 days and went home back on earth years might have passed.

Since space has less gravitation pull time moved differently than earth. It shouldn’t be major especially for people but electronics like to be in sync with each other so NASA actually has to make sure it’s equipment is set to run a tiny bit faster in space.