Personality. Personality refers to individual differences in characteristic patterns of thinking, feeling and behaving. The study of personality focuses on two broad areas: One is understanding individual differences in particular personality characteristics, such as sociability or irritability.
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation.
Edwin Powell Hubble (1889-1953). Edwin Hubble, for whom the Hubble Space Telescope is named, was one of the leading astronomers of the twentieth century.