What happens when the rocket leaves the earth?

When a rocket leaves Earth, it must overcome gravitational pull and atmospheric resistance to enter space. As it ascends, powerful engines propel it, and stages may be jettisoned to reduce weight. Once it reaches a sufficient altitude, it enters a low Earth orbit or continues on a trajectory toward its destination, depending on its mission. The transition marks the shift from the Earth's atmosphere to the vacuum of space, allowing the rocket to operate without air resistance.