NASA's Dawn spacecraft has entered the orbit of Ceres, a dwarf planet. The success has made the spacecraft the first mission to do so. It happened last week on Friday when Dawn was captured by Ceres' gravity at 4:39 am PST (7:39 am EST).
"Since its discovery in 1801, Ceres was known as a planet, then an asteroid and later a dwarf planet. Now, after a journey of 3.1 billion miles (4.9 billion kilometers) and 7.5 years, Dawn calls Ceres, home", said Marc Rayman, Dawn chief engineer and mission director at JPL, in a prepared statement.
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