They already have... a group place a missile on a pad, sent it up with the cameras aiming straight down..... It stopped after it hit something (probably water) at around 73 miles. It was just floating around up there. before it fell back to earth. What goes up must come down.....Gravity what is wonderous miracle.
A miracle,,,what WHY?....Well just imagine a giant Ball (oblate now), that is covered with miles and miles of water. Gravity is what holds this water to the surface of the earth.....Yes, it holds all that weight against the earth... No, there is no stratification of the waters where the gravity is too weak to keep them together. All waters are completely homogeneous.
Now let go to all Humans, their homes, building, cars, trucks,etc and we find that gravity also keeps us rooted to the earth.
Now, lets go to nature.... Yes, the trees, bushes, fish, animals, etc. are also all rooted to the earth by Gravity.
Don't leave out the flea, the fly, the tick, the feather, the hummingbird...... With the massive forces it takes to keep the above rooted to the earth, it lets a butterfly to fly through the air. It lets a feather float through the air on current of wind.
WHy does not that massive power that is required to keep the waters, oceans, humans, buildings etc. on earth not crush the smallest of animals, bugs, bees, fleas, etc.........It just does not make since. How can a hummingbird even take off if it takes thousand of horsepower to raise an rocket into the sky.
Got a lot of questions none of which have ever been answered......