flashing object moving north across constellation Leo, then turning sharply to the west (a 90% turn).My son and I were looking for galaxies through our telescope in the constellation Leo when suddenly we noticed an object moving directly across it to the North. At first I didn't think anything of it because that night we had seen three planes and five satellites crossing the sky in the same area. This object flashed a strange bluish-white light that gave off a sharp triangular appearance. I soon realized that it couldn't have been a plane because those give off repetative rythmical flashes. This object's flash was not like that. It would flash, pause a second, flash two or three times, pause a couple seconds, then back to one flash, then one long pause, then flash again. It just repeated like this, very unrandomly for about 7 or 8 secs. Then suddenly and without warning it made a sharp and quick 90% turn west, flashed again, then was gone. I also noticed that when it wasn't flashing, the object seemed to have a grayish-metallic spherical appearance to it. I don't know what I saw, I just know I've never seen anything like it before. I should also probably mention that an aircraft came to the exact position of this object. It arrived only seconds after it left.