Why is that? And so you're also saying the space shuttles fly >25000mph when leaving our atmosphere?
Sigh...no...you have trouble with the concept of orbit and the concept of escape.
Let us start with orbit:
Imagine a BFC (Big Fuck'n Cannon) You load it up and shoot it down range...Ignoring the air resistance the shell goes 1 mile before it hits the ground.
You reload with a larger powder charge. You shoot it down range and the muzzle velocity is faster than before, and so the shell goes 2 miles before it hits the ground.
You do this again and again, each time with larger powder charges. Each time the muzzle velocity is faster and faster. Each time the shell lands farther and farther downrange.
10 miles, 100 miles, 1000 miles. You keep doing it and you could make the shell hit the ground just behind you just by getting the muzzle velocity just right and shooting all the way around the world. Increase the muzzle velocity just so and the shell won't hit the ground, it will sail over your head, and keep going around and around. (again, ignoring air resistance.)
This is orbit...This is what the space shuttle does....
or did at one time.Let us consider escape now:
Load the cannon up with enough powder to have a muzzle velocity of 25,000 miles per hour. Shoot it straight up...the shell will leave the planet...probably to go into orbit around the Sun...but totally escaped from the earth...This is Escape velocity.