This thing really freaked me out the first time I saw it. I was alone, and sober, and it was bright like a whitish light, silent, there was no sound at all coming from it, I was close enough to it that I could see the details of it.....it literally looked like a plastic bag air balloon, and thats what i thought it was, but it was breezy out, and a bag would have been erratically floating through the air. this was on a steady 5k/hr speed, straight line. I watched it fly over downtown Peterborough towards the west end. it then got really bright like it caught on fire, and it was gone. I thought it was weird, but I forgot about it. Then it happened again 2 weeks later, and this time it flew right over me as i was walking through a park in the same area I had previously saw it. It was really close again, and looked like a grocery bag...as it passed over me, silently, it imploded again and disappeared. This time i told a friend about it, cause i was really freaked out. She ended up seeing it with me one night when we were walking downtown near the water. It was heading west, as it always had been when I initially saw it. She thought it was super weird and it gave her a creepy feeling, same way it affected me. I saw it once more after that, but I was in a car, and I wasn't able to follow it. I checked our local weather to see if it could be a weather balloon or something, but there was no launches of material from them.