The way the earth works?

Because there is a magnetic field in the universe, the direction of the magnetic field remains unchanged, so the force and direction will not change.

There are many stars in the process of decomposition now, and the stars fall down. . . I don't know if there is this problem, but if it falls, it should be the same regardless of mass, volume and speed. Because they also stay in a certain position before falling. The universe should be balanced, so it is incredible that the movement of a star is not only the law and change of its own trajectory, but also the external change leads to the fall of the whole star and the change of its existing position.

The expansion of the universe is a new situation of the change of the universe, which is not something we can detect now.