mYsTeRiOuS oRb...

This photo was taken before our Interview with our Dean... It was shot in front of the Deans Office and behind us is a stairway... Notice the mysterious orb in this picture (top-middle)??? What does it signify??? Is it some sort of an unknown element or entity??? Some websites like SFOGS (Singapore First Online Ghost Stories) posts more pictures that have this kind of orb... they say that these orbs are lost souls who roam around us...

I suddenly remembered a ghost story about this location (NRH building)... some say that a ghost of a student is frequently seen roaming around the 2nd floor corridor of this building and sometimes in the stairway heading to the library... Does this orb represent the ghost of that student?