The escape velocity of a celestial body, such as Earth, is the minimum speed an object needs to achieve in order to escape the gravitational pull of that body and never return. It is influenced by the mass and radius of the body.
In the case of Earth, the escape velocity is approximately 11.2 kilometers per second (or about 6.95 miles per second). This means that if an object is launched with a velocity greater than or equal to the escape velocity, it will be able to overcome Earth's gravitational pull and venture off into space indefinitely.
It is true that Earth's gravity will continue to exert a force on an object regardless of its speed. However, as long as the object's velocity exceeds the escape velocity, the gravitational force will gradually diminish as the object moves farther away from Earth. In the absence of other significant gravitational influences, the object will eventually reach a point where Earth's gravity has a negligible effect, and it will continue moving away indefinitely.
So, even in the absence of other planets or stars, Earth's gravity will not pull back an object that has achieved escape velocity.