I was at home looking through my telescope late at night clear sky when i saw the 6 o-clock position on the moon open up it was a colossal in size & then it closed & minutes latter i saw the stars blocked out above me by a black triangular out line it was also colossal in size not a sound came from it, the way i looked at it if you put yourself at the side of an aircraft size for size we are small but if the aircraft is flying at 36000 feet then it looks tiny, the craft i saw was the biggest thing i've seen in my life, it would make an aircraft carrier look like a family car......... when the moon opened up it was like a semi circle shape...... there was a full moon at the time i could't believe my eyes & checked my scope it was fine the object just kept going north i'm sure it was in space or on the very edge until i lost sight of the craft. i have flown aircraft myself & i have never seen anything like this before.