Universe extends  infinity in  all  directions. It is  impossible to  determine  the exact range,  nature and orientation of the universe. Because the human brain can   imagine whatever  they  hear and whatever they see only. Thousands and thousands  of galaxies are spread  all over  the universe and  earth is  only a  negligible  member   of one of  these galaxies.  Even the  scientists didn't capable to explain about our galaxy completely then how could  they imagine  others. Either human eye or a   powerful telescope can't give that ultimate  view of this  universe.
                                                             Then how the great sage could describe the universe  with its perfection and glory because they saw the totality without illusion,   they saw the  entire  universe through their inner eye. So close your outer eyes   because whatever you  see through your dead fleshy eyes is not reality, it is only illusion, it has certain range and  limitations.  Open your inner eyes which can leads   you the ultimate perfection, feel the  creator and be the  creator. Finally you should   realize the supreme  knowledge-"immortality".