Sun Dutch "zon", Old High German "sunna", modern German "Sonne", Old Norse "sunna", and Gothic "sunnō". All Germanic terms for the Sun stem from Proto-Germanic *"sunnōn". The Latin name for the Sun, "Sol", is used at times as another name for the Sun, but is not commonly used in everyday English. "Sol" is also used by planetary astronomers to refer to the duration of a solar day on another planet, such as Mars. The related word "solar" is the usual adjectival term used for the Sun, in terms such as solar day, solar eclipse, and Solar System. A mean Earth solar
What Do You Mean? also debuted at number one the "Billboard" Hot Digital Songs chart, selling 337,000 copies in the week ending September 3, 2015—marking Bieber's second number one single on the chart, following "Boyfriend" which sold 521,000 in its debut week. In its second week, "What Do You Mean?" stayed at the top of the Hot Digital Songs chart with sales of 159,000 copies, however, it descended to number three on the Hot 100, with a decrease of 30% in overall activity, but rebounded to the runner-up spot the following week and stayed as the best-selling song with 128,000 downloads. On the chart