As I was looking up the sky I noticed a black triangle shape flying object with three amber color round light source on all corners flying above me. I was excited watching it and as I was tracing it with my eyes, it appeared to be vanished. Its movement was rather fast, smooth and different. I later thought it must fly not relying on aerodynamics but other dynamics and that must be why I felt different it moved. I could not tell how high it was but I would imagine it must be pretty high. I could not tell the size of it either. My feeling of this was that I was glad that I finally had an opportunity to see one on my own. I have no way of knowing what they are doing here and hope they are not like us who needs to kill others to sustain and grow by nature.