system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why aren't things in orbit constantly accelerating?

Objects in orbit are constantly in free fall correct? So shouldn't they be accelerating from gravity, I know that gravity's effect greatly lessens as you get further from the surface, but still it's a force that should be accelerating, so why isn't the moon and the ISS constantly orbiting faster and faster?
gpt
They are constantly accelerating.  But it's important to know that, in physics, "accelerating" doesn't mean "getting faster".  Rather, it means "changing velocity".  And velocity is a vector, meaning that it has both a direction and a magnitude.  

We tend to think of the magnitude portion of velocity as the "speed" of the object, and acceleration as increasing that speed.  But changing the *direction* of the velocity vector is also acceleration.  So the acceleration of objects in orbit manifests as the constantly changing direction of their velocities.