It seemed to be flying very low, without making noise. It was very big and it seemed to be that the front of the saucer was lighting up 'caus of the resistance with the air . So the front lighted up (quarter of a) moonshaped .It moved very smooth thrue the air.We (me and my girlfriend) were walking home , we were looking at the hyades, when suddenly my girlfriend shouts and points out to something I could not identifie. I could get a good look at it when it slided thrue the air There was no tail(like a comet) it was too big to be an airplane flying so high that we couldn't hear the engines. It wasn't an airplane, it wasn't a comet, it wasn't a sky tracer nor a sattelite. I'm very sceptic about this all and I really didn't believe in et's but now I do. I am sure that it was something we don't know , it might have been a strange nature effect, But I am sure that it is unknown. I already have read a lot of books about weird things in this life on earth, I know alot of weird nature effects, but this one is unknown!