NASA's Dawn spacecraft successfully completed the first test of its ion propulsion system over the weekend.
NASA's Dawn spacecraft is on its way to study a pair of asteroids after lifting off Thursday from the Cape Canaveral Air Force Station.
NASA's Dawn spacecraft began its 3 billion kilometer (1.7 billion mile) journey through the inner solar system to study a pair of asteroids Thursday.
12.18.07 - NASA's Dawn spacecraft has successfully completed the initial checkout phase of the mission and begun its interplanetary cruise phase.
10.29.07 - NASA's Dawn spacecraft successfully completed the first test of its ion propulsion system over the weekend.
See how the Dawn spacecraft and Delta II rocket were readied for launch.
› All Launch Day VideosNASA's Dawn mission is getting ready to launch on an unprecedented tour of two residents of the asteroid belt. This mission will be the first to orbit two different bodies in our solar system.
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