I feel after the invention of electricity and lighting the appearance of ghosts has reduced. Our grandparents had many stories of ghost sightings. However we do not see many ghosts today.
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i have studied some about it.
they say that aura surrounds the body of angels but not ghosts.
So when they appear we can see a bright light that is aura.
you can see aura in pictures of Jesus Christ or Gods.
i will be here to support you,
wishing a splendid time in hub pages
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