True story:
Last year during the summer I decided to go for a run during the night since I wasn't able to get my morning jog in. While I was running I saw a green orb come up out of the street about 10 feet away from me. I stopped and was totally freaked out. I seriously could not move at all and could not believe what I was seeing. This orb flew into the air about 20 feet and slowly started moving into these bushes to the right of me all the while it was glowing like a green heartbeat. At that point I was so freaked I could do nothing but absolutely sprint with everything in me. I ran into my house and my parents were like "What the heck, it looks look you have seen a ghost you are flushed pale!" Yeah...it was a weird experience. Never will forget that.