Orbs are generally thought to be small circles of light or balls of energy that come in a wide variety of colors and sizes. Many believe they are the spirits of those who have passed. Most often, orbs appear in photos and video footage, although on rare occasions people claim to see them with their own eyes. Some psychic mediums even believe they can see inside the orb or give a description of the departed soul that is inhabiting it. We’ll save that discussion for another day.
There are also some who believe that orbs are alien entities. UFOs sometime appear as bright balls or discs of light in the night sky. If alien crafts can appear as large orbs, then perhaps the aliens themselves can appear as smaller orbs. Food for thought.