 CTV.ca | Dawn spacecraft to study origins of Earth San Francisco Chronicle A spacecraft from California named Dawn will begin a yearlong visit to the brightest asteroid in the distant sky this weekend to study how Earth and its closest planets formed more than 4 billion years ago. After a four-year looping flight past Mars ... NASA Spacecraft Now Orbiting Huge Asteroid Vesta ... Hopefully Dawn probe set to orbit asteroid Vesta Destination asteroid: NASA probe arrives at ancient 'mini moon' |
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