When did time actually begin? Some argue that time is infinite and others argue that it is finite.Others argue whether the Big Bang is where it all began or if time existed prior to this event. The latest in the field of brane cosmology explains The Big Bang as an occurrence of two giant membranes colliding, thus birthing our universe. Perhaps the best explanation, in my opinion, is from none other than Steven Hawking. He discovered time within our universe began with the Big Bang.
In A Brief History of Time and elsewhere, Hawking says that even if time did not begin with the Big Bang and there were another time frame before the Big Bang, no information from events then would be accessible to us, and nothing that happened then would have any effect upon the present time-frame.
Scientists have come to some agreement on descriptions of events that happened 10−35 seconds after the Big Bang, but generally agree that descriptions about what happened before one Planck time (5 × 10−44 seconds) after the Big Bang will likely remain pure speculation.
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