Atmospheric optics wavelengths. A halo (ἅλως; also known as a nimbus, icebow or gloriole) is an optical phenomenon produced by the interaction of light from the sun or moon with ice crystals in the atmosphere, resulting in colored or white arcs, rings or spots in the sky. Many halos are positioned near the sun or moon, but others are elsewhere and even in the opposite part of the sky. They can also form around artificial lights in very cold weather when ice crystals called diamond dust are floating in the nearby air. There are many types of ice halos. They are produced
What a Beautiful Name on 6 January 2017, as the lead single from their 25th live album, "Let There Be Light" (2016). "What a Beautiful Name" was composed in December 2015 in Sydney, Australia, for the upcoming Hillsong Conference, the annual church gathering. The scriptural foundation of the song can be found in , and . According to sheet music published at Sheetmusicdirect.com by Hillsong Publishing, "What a Beautiful Name" is a slow tempo of 68 beats per minute. Written in common time, the song is in the key of D major. Brooke Ligertwood's vocal range spans from A to B during the song.