Sun

The Sun (in Greek: Helios, in Latin: Sol) is the star at the center of the Solar System and is by far the most important source of energy for life on Earth. It is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. Its diameter is about 109 times that of Earth, and it has a mass about 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System.About three quarters of the Sun's mass consists of hydrogen; the rest is mostly helium, with much smaller quantities of heavier elements, including oxygen, carbon, neon and iron.

The Sun is a G-type main-sequence star (G2V) based on spectral class and it is informally referred to as a yellow dwarf. It formed approximately 4.567 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became increasingly hot and dense, eventually initiating nuclear fusion in its core. It is thought that almost all stars form by this process.

Sol Star

Solomon "Sol" Star (December 20, 1840 – October 10, 1917) was an early resident of the town of Deadwood, South Dakota.

Life and career

Star was born in Germany, to Jewish parents. When he was ten years of age, his family moved to Ohio. When he grew older, he moved to Helena, Montana, where he served as territorial auditor and personal secretary to the governor. He partnered with Seth Bullock in a hardware store. In August 1876, Star and Bullock, attracted to Deadwood by the promise of a great deal of business stemming from the gold rush, purchased a lot there from Al Swearengen and Henry Beaman. They opened the Office of Star and Bullock, Auctioneers and Commission Merchants. They later partnered in livestock ranching as the S&B Ranch Company, and with Harris Franklin in the Deadwood Flouring Mill, in 1880, where Star was the general manager. The duo expanded their business interests to the towns of Spearfish, Sturgis, and Custer.

Bullock and Star contributed further to the economic development of the region by convincing the Fremont, Elkhorn, and Missouri Valley Railroad to build a track, by offering them 40 acres (162,000 m²) of free right-of-way across their land when a speculator purchased the right of way to Minnesela and demanded a high price from the railroad. The railroad built a station three miles northwest of Minnesela, South Dakota, in 1890, and Bullock and Star were instrumental in founding the town of Belle Fourche there, offering free lots to anyone moving from Minnesela. Belle Fourche became the largest railhead for livestock in the United States and stole the county seat away from a declining Minnesela.