Modern technology - by way of aura photography that evolved from Kirilian photography - has now proved how a person's inner spiritual light is reflected from the body.

Simply put, the aura is an electromagnetic or energy field that surrounds all living things. It's outside the visible light spectrum, therefore most people cannot see it. The electromagnetic or energy field of the aura is made up of very high frequencies, for most people it requires intense concentration and meditation to be able to see the aura, however almost everyone has the ability to sense the effects of their own aura and the aura of others; they just don't realize it.

The aura extends about two to four inches around the body, the more spiritual the person, the stronger and wider the aura. The Torah itself testifies that Moses's aura was so blinding, that he had to cover his face with a veil when he was among other people. The aura's colors, textures and patterns reveal much information about physical, emotional, mental and spiritual states of a person. It's rather like a thumbprint, completely individual, expressing who you really are in all your splendor.

The more a person's soul prevails over the body, in other words, the more one possesses a developed sense of spiritual awareness the better one sees another person's aura. 

Everything has an aura - the inanimate, plants, animals, and man. If you gently water and weed your African violets, their aura will change, showing happiness and gratitude for your tender-loving care. Dairy cattle's aura change when they hear classical music in the milking parlor. Our aura shines bright the more we connect with Hashem.

from lazerbrody.com