me and and my sister were outside and seen some blinking light to the east, so we watched the sky for awhile. my sister looked to the north and seen a triangle shaped object flying (seemed like it was gliding) and pointed it out to me, i seen the object, all lights really bright and the outline of the object can be seen, was a very large (300 ft) or so. it was probably around a mile or 2 high. planes can be seen at a hight of 30,000 feet also heading towards the east, so the plane was a lot higher than the object, the object was heading from north to south. my sister and i looked at the object for about 10 seconds and then i ran inside the house to get my brother and ran back out but then it disappeared. it felt surreal to see it, my sister was scared but it seemed just like watching a movie, it was a clear night and the object was easily visible. my sister thought it was a flock of geese flying in formation at first but as it came closer, it was clear it was a ufo.