These are the events in empty space.

Such events are only analysed for us by the intellectual probing of science.
Ingression is a relation which has various modes.

There are obviously very various kinds of objects; and no one kind of object can have the same sort of relations to events as objects of another kind can have.

We shall have to analyse out some of the different modes of ingression which different kinds of objects have into events.
But even if we stick to one and the same kind of objects, an object of that kind has different modes of ingression into different events.
Science and philosophy have been apt to entangle themselves in a simple-minded theory that an object is at one place at any definite time, and is in no sense anywhere else.

This is in fact the attitude of common sense thought, though it is not the attitude of language which is naively expressing the facts of experience.