OK- i can understand how a planet would have a beginning- But how does a universe start? does it have a beginning or birth? or has space always been there with no birth? were did the void come from before stars and planets?
2. The Universe had a beginning.
3. The Universe had a cause.
Think of this. All of time, matter, energy, matter came to be at a moment. Just prior to that singularity, there was no universe. Then,...there was. Einstein profered the General theory of relatity, Eddington proved it with care calculations and photography of the a complete Solar eclipse. Hubble proved the theory with his discovery of the Red Shift. Penzias and Wilson recorded the vanishing remnant of the sound of the initial explosion, George Smoot was the overseer of NASAs COBE probe which proved what had been predicted 40 years prior by photoghaphing the residual heat 'ripples' of that initial explosion, and the WMAP probe reconfirmed Smoots findings.
So, in accordance with the Priniciple of Causality, you ask, what caused it. That is the age-old question. Things which begin (or come to be) have a cause. So from the afforementioned scientists we find that all of physics indicate that there was a cause. What is this cause. We do know that all of causality falling int one of two groups, either an abstract concept, but abstract concepts do not stand in a causal relationship to physical 'things', or the cause is personal (as Mind). So Mind does stand in causal relationship to the physical. So this cause, along the order of Mind, seems to be characterized by the following: unimagninably powerful to have created the masssiveness of the universe, timeless (in that time did not exist prior to the moment of creation), unimaginably intelligent (to ordered the universe out of the entropy of the creation explosion, Personal (in that a decision was made to create everything out of nothing (creatio ex nihlo). Self-existant (as that cause existed outside of the universe). These are the characteristics of First Cause which science, by induction, we can know of this cause. You already know who that is.
So I will ask you this one question, originally put by Leibnez, "If there is no God, why is there anything at all?"