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.
NASA had started working on Hubble, the first telescope in the Great Observatories program, in 1977. It was originally supposed to be launched in 1985. But then the space shuttle Challenger exploded in 1986, and flights came to a halt while NASA tried to figure out how to safely resume them.