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The first detailed images allow scientists to confidently determine the body was formed when two spheres, or 'lobes,' slowly gravitated towards each other until they stuck together – a major scientific discovery
(UPDATED) 'We have a healthy spacecraft,' says the missions operations manager for the unmanned spacecraft
Hurtling through space at a speed of 51,500 kilometers per hour, the spacecraft aims to make its closest approach within 3,500 kilometers of the surface of Ultima Thule
The historic flyby to Ultima Thule, the most distant world ever studied, is set to 'take us back 4 and a half billion years to the birth of the solar system'
(UPDATED) The flyby takes place about a billion miles beyond Pluto, the most faraway world visited by a spacecraft so far