Why There Is No Gravity In Outer Space
It’s difficult to imagine a world without a gravity as we all are so used to it that we don’t even pay any attention to its presence. However, in the outer space gravitational pull is so small that it’s negligible and a human won’t even notice it. This is because of nature of gravitational force: it is proportional to masses of objects and inversely proportional to the square of distance between objects, so if you double the distance between objects gravitational force will be only 1/4 of what it used to be. Even though the masses of Earth or Sun are incredibly huge, distances in space are so large that gravitational force acting on a human or even a whole spaceship becomes almost zero, even if it never reaches that exact number. Additionally, if an object is travelling in an orbit, and its acceleration is equal to the gravitational force exerted on it, it will be in the “free-fall” condition forever, never actually falling on an object it orbits. That leads to the fact that astronauts feel weightless at the International Space Station. However objects with large mass like meteorites can still feel gravitational pull of Earth if they come close enough.Still bored? Click to continue: Understanding Gravitational Force in Space