Circa autumn 1979 I experienced my second UFO encounter as follows.I was 24 years old while looking at the night sky, as usual, when I saw 3 very bright light circles measuring one third the size of a full moon; however boasting a dark matter within each circle giving it the apparition of circular rings. The said rings were then joined by approx. 3 to 5 other bright rings forming a definite triangular image of spectacular nature. This all happened and witnessed by myself for approximately 5 minutes until the triangular formation sped off at extremely high speeds.During 1974 and 1976 I experienced my first unexplained phenomenon within my home in the late hours of the night when I witnessed a ball of light with tentacles pass within my home's corridor.Again, I was not able to identify this sighting.