With String Theory concepts and experimental data reported in peer-reviewed journals, logical explanations are suggested for some of the current unanswered questions including:· Did our universe exist before the Big Bang?· How did the Big Bang start?· Where did the mass and energy in the universe come from?· How did the basic particles and forces get their attributes?· What started inflation?· What stopped inflation?· Did faster-than-light expansion occur during inflation?· Will our universe expand forever or crunch back?· Where does light come from?· Why can light be both a particle and a wave?· What are at the centers of galaxies? · Where does the matter and antimatter in galaxies come from?· Why is there almost no antimatter in our universe?· Why are galaxies shaped the way they are?· Why are clusters of galaxies shaped the way they are?· Do external universes exist?· Why does the nucleus of some galaxies emit intense radiation?· If Quantum Entanglement is real, how does it work?· What is Dark Energy?· What is Dark Matter?· What are the dimensions in String Theory?· Is eternal life possible?