Why didn’t Dawn land on dwarf planet Ceres?
Planetary Radio: Space Exploration, Astronomy and Science
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Sail On, Sail On, and Tell Us About the Night Sky
planetary dot org slash sa i l o n. Make your contribution to science and history. Time for what's up on planetary radio. Here's the chief scientist of the planetary society. He is also the program manager for lightsal, a light sail that is still orbiting above us right now.
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