At exactly 8:53 pm sunday august 30 i was aligning my telescope in my back yard when i noticed a very bright white light to the nnw just over rooftops but in the distance about a mile or so away. this light was travelling directly south in a straight line, fairly slowly and not changing speed. being a long time amateur astronomer / astrophotographer i am very familiar with everything in the night skies from satellites, to the types of aircraft in my area. since it was coming from the direction of the st. catherines airport i thought it was a plane, though it was travelling very low even for local traffic, though not a regular lane for airplanes. i felt fear right away though as there were no aviation lights, just a very bright white light that seemed to make a cloud of mist in front of it as it travelled. in under 30 seconds the light dimmed inside this round cloud as i was scrambling to get my phone ready to record video and the bright light turned into a faint and tiny white dot light surrounded by this round cloud as it kept moving due south at a steady speed. the winds were travelling se at 4 kmph in my location at the time. as some seconds went by the tiny round dot light seemed to disappear and what was left was this orb cloud that had somewhat of a hole in the centre where the light was and that kept moving south until it went behind trees and didn't emerge out the other side.