Time and Time period or Life span. And combined theory of Time dilation. pintrest.com In the modern era, knowing about time, theory of time or activities and behaviour of time is the most complex question. The longing to know about these mysteries is being brought many theories in the modern era.And this modern theories is making more complex in understanding of time. Is time really that hard to understand? The disciplinary of modern science theories time began with a big bang. The speed of time can change. It can be more or less, it depends on the speed. and modern theory also says that time dilation is possible. Now the question is, is time dilation is really possible? Can it be slow or fast? About the origin of time and life span of universe is detailed in link below. ( https://achintyaspiritual.blogspot.com/2019/10/the-life-span-of-universe-and-theory-of.html ) If we talk about the theory of modern or spiritual science, then: ...