dark gray with lights around it

I have allways kept this to my self i really dont want any one to think im nuts but this happened and i cant never forget it it happened about 8 pm i was sitting outside my house with my older brother and we heard this noise it was like humming but really clean i cant discribe exactly the ufo was dark gray round with lights around it it passed by  really slow i have allways said i dont believe in this things even do i saw this when i was young. last night i saw a documentary about a sighting in new mexico the ufo that they discribed was just like i remenber so it really made me think. it would be selfish to think that we are the only ones in this big universe .. 
the next day more than half the town was talking about it me and some friends went to the area were this ufo seem to stop and there was this perfect burn mark it was round and really big it was about 2'feet wide and about 30 in diameter .