Close Mysterious Ring-Shaped UFO Appears in the Sky People are claiming these UFOs made of 'smoke vortexes' are proof of aliens. Nathan Rousseau Smith (@fantasticmrnate) investigates. KUSA 1:52 PM. MDT July 13, 2017 TRENDING VIDEOS Teen charged with first-degree murder Leash law crackdown in Lafayette Teen arrested in girl's death in court 10-year-old death investigation WUSA Breaking News Conspiracy theorist segment stirs controversy Next Question: Manicured lawns in canyon President Trump: Suspect in congressional baseball shooting has died Family from Fort Collins lives in their bus Teen drives car into King Soopers store More Stories Friend of Dylan Redwine reacts to father's arrest Jul 23, 2017, 10:17 p.m. Barbershop owner spreads positive message through… Jul 23, 2017, 9:55 p.m. High-speed drone racing gaining popularity in Colorado Jul 23, 2017, 8:52 p.m.