Despite the wide approval of the primeval atom concept (proposed by Georges Lemaitre) and the corresponding Big Bang theory among the scientific community and researchers, still there are several open questions with no answers. Among these questions are: what is the origin of the primeval atom? What caused this atom to explode? where was that explosion actually happened? and why our universe is a matter based universe?
This paper proposes possible answers to these questions via:
1- Generalizing the idea of the primeval atom to be primeval particle,
2- Suggesting a possible formation of the proposed primeval particle, in particular, suggesting its formation from masses inside black holes,
3- Suggesting a possible way of the initiation of the original explosion in the Big Bang theory,
4- Demonstrating why some universes are matter based universes and others are anti-matter based universes, and
5- Confirming the necessity of the existence of a fourth spatial dimension.