I was having taking picture of full moon tonight and something that wasn't supposed to be there got in my picture

I went out for ciggy at 10 pm. I looked up and the full moon in dead winter was pretty. At first I tried to take picture of the moon and the northern star together. That would be nice, but the street light from my side was giving too much light. I deemed the pictures as failure. Then I moved a little to the side to remove the street light effect and got clear pictures of the moon.
I browsed the pics I took and got a shock. The northern star I thought was a star actually moved in my first ruined pictures. And on my following pictures there was something that shouldn't be there.
The object was fast moving and emiting light. It was so fast I couldn't register anything else than glimpse or streak of light. Only in the pictures I saw it was ball shape, but changing shape too. Probably because of the speed.
I am 42 year old woman living in Finland. For living I run a shop in the capital. I'm happily in relationship with my Portuguese man and we have 10 year old son. I'm not drug addict or mentally unstable. I just happened to be there.
Lens Flare