UFO Sighting in Las Vegas, Nevada on 2020-04-01 22:03:00 – Bright pulsating light near lone mountain

Just before 9:30 pm on april 1 2020 i was in my backyard with my dog. it was windy that night and i was glancing around the night sky as i often do, looking at constellations. to the w/nw i noticed a very bright light in the sky. it was not moving, but very bright. there were visible stars, as well as, the moon, and this was much, much brighter than anything in the sky. i took out my iphone and began to record the object....Mainly because i just didn't know what it was. it appeared to the naked eye to be pulsating and at times, to be rotating. i took several videos over the period of about 15 minutes as the "object" slowly moved to the nw horizon. i attempted to follow the "object" in my car towards the general direction it was heading but as i passed by lone mountain area, it simply disappeared. what was moments ago the brightest light in the sky was now gone.