On a pathway in my backyard I was walking northerly towards my house. I decided to stop and look at the westerly sky, because many stars were visible. I did not see any airplanes in the sky. Within about 2 minutes of looking around the sky I observed a single big flash of light. The blink/flash lasted about half a second. When I first saw the flash my first thought was meteor that burned out as soon as I saw it, but there was no glowing wake tail. And then within less than 5 seconds I see a 2nd flash of light at about same elevation but much further north, then a 3rd flash of light a few seconds later still further north (NW sky), then a 4th flash back towards south (WSW), and then after a gap of about 15 to 20 seconds a final 5th flash in the SSE sky. After waiting a minute with no further observations of light flashes I walked swiftly to retrieve my mobile phone. I picked up my phone inside and quickly went back outside to view the sky. I remained gazing at the sky for about 5 minutes, and observed typical airplane traffic, 3 planes going different directions at different altitudes and at typical speeds, and all planes at much higher elevation above the horizon than the light flashes that I had observed minutes before. I was in awe of how fast the flash had moved across the sky. No airplane moves so quickly across the sky. The International Space Station does not move this quickly across the sky or change direction with such agility. I thought, well, these 5 flashes of light could be more than 1 craft/object/entity, but my belief is that it was the same craft/object/entity. I have never observed anything like this before. No sound, just light, and amazing speed. I would like to know if any air traffic controllers in the area detected any super-sonic, near light speed aircraft on their instruments.