I was sitting in my sunroom watching the sunset looking southeast toward the ocean 3 blocks away. i was engaged in watching jupiter and saturn come into view. all of a sudden a disk shaped glowing pulsating extremely large unknown object popped into view. when my brain noted it was there, it began to float directly downward at a vertical angle continuing to pulse green, red and gold lights which appeared to be turning counterclockwise. from its point of entry into my observationaobservational view (to the left of our gas giants) to the vertical drop point at which it stood still for around 45 seconds or so, this slow, seamless, countless decent while pulsing, glowing and the lights on the craft's side rotaing counterclockwise, took around a minute. then, after it stood still a few seconds, it just faded outoout of sight in place.