When we observe stars moving at high velocities, it is important to note that their motion is typically relative to other objects in their vicinity, such as their orbit around the center of a galaxy or their motion within a binary star system. The gravitational forces acting on the star and the balance between these forces play a crucial role in preventing the star from tearing apart.
Stars are held together by their own gravity, which acts as an inward force, trying to collapse the star. This gravitational force is balanced by the outward pressure created by the internal fusion reactions occurring within the star's core. This equilibrium maintains the stability and shape of the star.
When a star moves at high velocities, the gravitational forces acting upon it are still the same. As long as the balance between gravity and internal pressure is maintained, the star remains intact. The motion of the star does not significantly impact its internal structure or cause it to tear apart.
However, it is important to note that extreme gravitational forces, such as those near a black hole or during a close encounter with another massive object, can have disruptive effects on a star. In these cases, tidal forces can distort the star, and if the gravitational forces exceed the internal pressure, the star may be torn apart.
In general, the motion of a star at high velocities is influenced by the gravitational interactions with other objects and the dynamics of the system. As long as the star remains within the limits of gravitational stability and the balance between gravity and internal pressure is maintained, it can move without tearing apart.