Kent, united kingdom (strange sighting maybe new military equipment)Is was 19:50 last night and the sun had set but it was not 100% dark at this time sky was a dark blue and i was smoking out my window (im in a loft conversion so i got nice roof windows looking slightly upwards) when i saw the flashing of 3 white lights ending with a red light, now i see alot of airliners in the sky and this formation of lights was diffrant. So i decided to keep watching, as this aircraft got closer i could make out a bright orange light underneath it was also moving alot slower than a normal airliner i would say at least a quater of the speed not fast at all, as it went by towards east to my right as i am facing north. i could see it turn , now the wierd thing is that i saw the lights underneth as it turned and started coming back west! i watched as it got far into the wests distance then about 2 minites later i saw in the wests distance the lights coming back, as before it flew towards east turned and started coming back, now i could see it was going to be flying back directly over my house and right above my head. At this point my mouth went dry and i started to shake i guess due to the adrenilne as it got closer i stood on a chair so i was right out my window a looked right up at this thing. its hard to say how high up it was in the sky i would guess at about half the hieght an airliners would be at. I saw four orange lights type things undernieth that were always on.. there was also very small flashing white lights with a red one at the end. now i could make out the shape of this thing and it was sort of triangler in shape but as i looked even further i could make out very faint wings that were a semi circular shape , now with these wings this thing was huge! about the size of maybe 20 big jumbos side to side! but it was quite hard to make out the wings you had to realy look closely but thay were there. still making no noise what soever it moved west and turned and headed east and then went. I stayed looking for about another 10 mins but it didnt come back.