It was dark out. the back of my house faces a golf course. there is no lights whatsoever back there. i noticed a light flashing across my back windows. sometimes in the summer golfers go out at night with flashlights looking for balls. i thought it was unusual that anyone be out there in february. so i looked out the window and saw the light source was in the sky, not on the golf course. i turned all the lights out in the room and started taking pictures through the window. my first picture had the flash on, which shocked me. shocked them too, because they flashed a small light at the window. i stood there for awhile before moving. then turned off light on my phone, and took a few pictures. i left and came back awhile later, it was still there. hour or so later it was gone.