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NASA's Dawn spacecraft is first to arrive at dwarf planet
NASA's Dawn spacecraft is first to arrive at dwarf planet

The signal arrived at 5:36 a.m. PST on Friday: NASA's Dawn spacecraft had successfully entered into orbit around Ceres, becoming the first NASA mission to visit a dwarf planet, and the first mission to visit two distinct bodies in the solar system.  "We feel exhilarated," said Chris Russell, principal investigator of the Dawn mission at the University of California, Los Angeles (UCLA) in a statement. "We have much to do over the next year and a half, but we are now on station with ample reserves, and a robust plan to obtain our science objectives." Ceres is the largest object in the asteroid belt between Mars and Jupiter and the final stop on Dawn's...

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