To envision the vast area covered by total Cosmos, we have to start from the level of a human being.
Human beings imagine and live within a notion that earth is the end of all.
Millions of stars comprise a galaxy. One may or may not be able to achieve the ultimate goal in one life span of 70 - 80 years is but a matter of speculation and entirely dependent upon the resultant karma of a being. Understand the Cosmic truth and all would become clear. Relatively speaking, human being is but a speck of dust in the vast Cosmos yet most powerful. Download Free working trial version.