Question

why do rockets sent to space do not fall back on the earth​

Answer 1

This will cause them to re-enter the atmosphere and burn up sooner. Debris in orbits below 373 miles usually falls back to Earth within a few years. Objects at heights of more than 621 miles can stay in orbit for more than a century.

Answer 2

Answer:

Satellites don’t fall from the sky because they are orbiting Earth. Even when satellites are thousands of miles away, Earth’s gravity still tugs on them. Gravity--combined with the satellite’s momentum from its launch into space--cause the satellite go into orbit above Earth, instead of falling back down to the ground.