system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can the gravity from the sun keep the planets locked in orbit, but we are weightless in space.

So basically if the gravity from the sun is strong enough to keep the planets orbiting it, why don’t we feel that gravity in space? How is it strong enough to pull on the earth but not on a person?
gpt
We are weightless in space because we are in freefall. Imagine being trapped in a falling elevator. You and the elevator would fall at the same rate, so you'd 'float' inside it.

If you're in orbit, you experience the same thing - the ISS, for example, is falling around the planet constantly (that's what an orbit is). If you were travelling to, say, Mars, you would essentially be falling towards Mars.