Through transparent objects are the things are the things through we can see objects. Shadows are formed when any body comes near any illuminated object. No we cannot see a shadow at nigh t without any source of light or any other illuminated object. Shadow are of black colour. A virtual image is formed on shiny surfaces I.e. mirrors. Image formed is always opposite to the object this is right hand is seem as to left hand and vice versa. This is called lateral inversion
Without light we can't get the shadows in any place of world ,then hw can we get shadow without light,I think your question is wroung