UFO Sighting in Sun City West, Arizona on 2020-01-06 03:00:00 – Pulsating, fixed position, then dissapeared

3:00 am on january 6, 2020 after bathroom trip, climbed back into bed, rolled over on side and was gazing out n/e eight foot bedroom window. suddenly a very large, white, bright as the sun ufo appeared out of the dark sky. it began to pulsate in large waves of white light for less than a minute, then vanished/disappeared like you would turn off a light. the sky was dark, no aircraft. no visible bright stars. i had no visible land mark orientation, however it was higher than tree top, not as high as the white tank mountain tops would be. i was shocked by the sudden appearance and in awe of it's beauty and somewhat mind numbed for a few minutes after it disappeared as i tried to process the event.