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.
Service Mission 4 was completed in May of 2009, scientists replaced batteries, repaired borken instruments, installed new gyroscopes to maintain the telescope's stability, put in a new imaging camera, and a new spectrograph in hopes of keeping the Hubble in working order until 2014 when it will retire.