Have you ever seen a ghost or an alien?

I saw a triangular shape ufo for a very brief moment when i was 11. I love paranormal so when I also heard there was this haunted house I sit there at 16 to wait. I was all laughing, I didn't believe in it at all. I saw a girl, she was too pale, I don't know what she was but she just appear up in the window looking direct to me so made me think she was seeing me also through the wall.

Have never seen either until now! talking with them though haha Seriously,I'm quiet interested in alien stuff ... the way they look,are they really way ahead of us in terms of technology and why on this universe they're hiding from us if they at all they knew that there is another planet called earth where life exists.