On jan 5 2018 i was sitting outside facing south south east in fresno, ca. @ about 8:45 pm when what appeared to be an oval object that was lit up but had defined edges flying way too fast to be a plane or jet.It wasn't going like flash like a falling star usually does but faster than any jet. it did not have a tail and when it appeared and disappeared it did it in a snap, no fading or burning out. it did not fly at an angle towards the earth, it flew parallel to the surface and maintained altitude and actually seemed to gain altitude before it disappeared in a blink of an eye. it appeared to be very high up but was under the clouds, the sky was almost entirely covered by clouds. the instant it appeared i knew i was seeing a craft but it took me a second to realize it was like nothing i have ever seen in my entire life. it flew in a straight line but almost seemed to have a tiny wobble or a slight pulsating appearance to it as it flew and the size was about the size of a button on a tv remote. the whole ordeal only lasted about 4 seconds but luckily i just happened to be looking up at the sky when it appeared, it appeared the same way it disappeared, in a snap like turning on a light switch. it's hard to explain, i've never seen anything like it. it was big, it was fast and i could see it perfectly. when it blinked out i stood up and the hair on my neck and arms stood up and i said to myself "i think i just saw a freaking ufo!" i really hope someone else saw it!