Carbon–hydrogen bond C−H bond is generally regarded as being non-polar. In structural formulas of molecules, the hydrogen atoms are often omitted. Compound classes consisting solely of C–H bonds and C–C bonds are alkanes, alkenes, alkynes, and aromatic hydrocarbons. Collectively they are known as hydrocarbons. In October 2016, astronomers reported that the very basic chemical ingredients of life—the carbon-hydrogen molecule (CH, or methylidyne radical), the carbon-hydrogen positive ion (CH+) and the carbon ion (C+)—are the result, in large part, of ultraviolet light from stars, rather than in other ways, such as the result of turbulent events related to supernovae and young stars, as
Aurora (given name) Arora in family surnames or given female names. Aurora (given name) Aurora is a feminine given name, originating from the name of the ancient Roman goddess of dawn Aurora. The variant used in the Russian language is "" ("Avrora"). While in use before the 20th century, it became more common after the Russian Revolution of 1917, due to the role cruiser "Aurora" played in the events. In 1924–1930, the name was included into various Soviet calendars, which included the new and often artificially created names promoting the new Soviet realities and encouraging the break with the tradition of using the