Multiple cosmologists (like Avi Loeb at Harvard Univerity) say that the universe had a beginning and will come to an end.
LOL. Good one.
Infinite regression of matter is logically fallacious.
The Steady-State theory is toast.
The universe had a beginning. The end of it (some 100 trillion years from now according to cosmologists will subatomic particles breaking apart and then - static).
The CONTENTS of this Universe, yes, will have changed into another form. Infinite space and infinite time cannot change, never began, cannot end.