Dawn is a NASA spacecraft tasked with the exploration and study of the asteroid Vesta and the dwarf planet Ceres, the two largest members of the asteroid belt. The spacecraft was constructed with some European cooperation, with components contributed by partners in Germany, Italy, and the Netherlands. The Dawn mission is managed by NASA's Jet Propulsion Laboratory.
Dawn will be the first spacecraft to visit either Vesta or Ceres. It may furthermore be the first spacecraft to orbit two separate extraterrestrial bodies, using ion thrusters to travel between its targets. Previous multi-target missions using conventional drives, such as the Voyager program, were restricted to flybys.
Launched on September 27, 2007, Dawn entered orbit around Vesta on July 16, 2011, and will explore it until August 26, 2012. Thereafter, the spacecraft will head to Ceres, which it is scheduled to reach in February 2015.Dawn is NASA’s first purely exploratory mission to use ion propulsion.
The status of the Dawn mission has changed several times. In December 2003, the project was first cancelled, and then reinstated in February 2004. In October 2005, work on Dawn was placed in "stand down" mode. In January 2006, Dawn's "stand down" was discussed in the press as "indefinitely postponed", even though NASA had announced no new decisions regarding the mission's status. On March 2, 2006, Dawn was cancelled by NASA.
Leonard Simon Nimoy ( /ˈniːmɔɪ/ NEE-moy; born March 26, 1931) is an American actor, film director, poet, musician and photographer. Nimoy's most famous role is that of Spock in the original Star Trek series (1966–1969), and in multiple film, television, and video-game sequels.
Nimoy began his career in his early twenties, teaching acting classes in Hollywood and making minor film and television appearances through the 1950s, as well as playing the title role in Kid Monk Baroni. In 1953, he served in the United States Army. In 1965, he made his first appearance in the rejected Star Trek pilot, "The Cage", and would go on to play the character of Mr. Spock until 1969, followed by seven feature films and guest slots in various sequels. His character of Spock had a significant cultural impact and garnered Nimoy three Emmy Award nominations; TV Guide named Spock one of the 50 greatest TV characters. After the original Star Trek series, Nimoy starred in Mission: Impossible for two seasons, hosted the documentary series In Search of..., and narrated Civilization IV, as well as making several well-received stage appearances.
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NASA probe begins search for life on Ceres
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