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
Dora (given name) Dora (given name) Dora () is a female name of Greek origin being a shortened form or derived from Dorothea (Dorothy), Theodora meaning "Gift" or in its full form "God's Gift", from , "doron", "gift" + , "theos", "god". The name "Dora" can also be a short form of "Isadora", "Isidora" and other such compound names. The earliest form of the word "doron" is the Mycenaean Greek , "do-ra", meaning "gifts", written in the Linear B syllabic script, but it is not an anthroponym, it is only the plural () of said word; on the other hand, the names "Theodora"