It's not about reaching a specific speed to get into space, but rather achieving escape velocity. This is the minimum speed an object needs to escape the gravitational pull of a planet or moon.

Here's a breakdown:

* Escape velocity for Earth: Around 11.2 kilometers per second (7 miles per second). This means a rocket needs to be traveling at least this fast to break free from Earth's gravity and continue traveling into space.

Important things to note:

* It's not a single speed: Escape velocity depends on the mass and radius of the celestial body you're trying to escape. So, the escape velocity for the Moon is different from Earth's.

* It's the minimum: A rocket can reach space traveling slower than escape velocity, but it will eventually fall back to Earth unless it has enough fuel to maintain its upward trajectory.

* Reaching orbit: To stay in orbit around Earth, a rocket needs to reach a lower speed called orbital velocity, which is about 7.9 kilometers per second (4.9 miles per second). This speed allows the rocket to continuously fall towards Earth while maintaining its altitude due to its sideways motion.

So, while escape velocity is important for leaving Earth's gravitational pull, it's not the only speed involved in space travel.