We can see only light and illuminated objects. We can not see anything in dark. An object how bigger it may be become smaller and smaller as it goes away and away from our eye sight, the thing appears us smaller and smaller till it disappears from our eye sight. The sun is the only object which gives light to the entire solar system. In size it is 3 lakhs time bigger than earth but it appears like a football to us. We know that the sun is about 150 million Kilometers away from the earth. Thus, an object like our earth will completely disappear on the above distance from our eye sight. Since we are created from earth, the power of our eyes has merged with the earth and since the earthlike object disappears at a distance of 150 million Kilometers, the eyes power can not see anything ahead of it. Here starts the game of reflection.  

                 Sun gives light to the 50% of earth. Another 50% of earth covers with the darkness. The shadow of earth runs within the sun light. Since point of earth's shadow at the distance of 150 million Kilometers completely disappear within the sun light and hence we meet the space mirror and such space mirror is reflecting solar system reversely near about the area of 75 million Kilometers meets another space mirror therefore which mirror we meet first at the point of earth shadow gives us the unlimited depth of space because the objects within the area of such 75 million Kilometer between two space mirror reflecting unlimitedly in both front side and backside. Though the giant telescope installed by various world space organizations has discovered a lot of mysteries at hundreds of light years distances, i.e. asteroids, milky ways, galaxies, supernovas, white dwarfs, nebulas, black holes, extra solar systems etc. these mysteries are not real mysteries and which are created from space mirror. Other hand the Cause of above rule of reflection, sun spots are created on sun.