Description

In regards to the Facebook video and other sources of a UFO sighting in Vegas (https://www.reddit.com/r/UFOs/comments/zu0xxx/ufo_above_sapphire_las_…). Here is the exact building that is being reflected in the sky. It's the Wynn and Encore building and their yellow illuminating lights creating that banana shaped yellow ring pair of lights. Ice crystals or reflective gases in the sky can reflect light. The outline is a perfect match, I highly doubt it could be anything else.

Edit: Other reflected buildings are also pointed out here (https://www.reddit.com/r/UFOs/comments/zu0xxx/ufo_above_sapphire_las_…) by /u/headinthestarrs

Edit 2: I inverted the Facebook image because it's a reflection, it originally was oriented like this (https://i.imgur.com/Zh6ZsKq.png). (source (https://www.reddit.com/r/UFOs/comments/zu7hdg/david_nicolls_footage_o…))