* Gravity never truly goes away: Gravity is a force that acts between any two objects with mass. Earth has mass, so it exerts a gravitational pull on everything around it, including you. This force weakens with distance, but it never completely disappears.
* "Zero gravity" is a misnomer: What we typically experience as "zero gravity" in space is actually freefall. Objects in orbit around Earth are constantly falling towards the planet, but their sideways motion (orbital velocity) keeps them from actually hitting the surface. This continuous falling is what creates the sensation of weightlessness.
* The International Space Station (ISS) is a good example: The ISS orbits about 400 kilometers (250 miles) above Earth's surface. At this altitude, the gravitational pull is about 90% of what it is at Earth's surface.
To summarize:
* Gravity weakens as you move away from Earth, but it never reaches zero.
* The feeling of "zero gravity" is actually freefall, where objects are constantly falling towards Earth but moving sideways fast enough to miss hitting the surface.
