Illustration of NASA’s New Horizons spacecraft encountering ‘Ultima Thule’ – a Kuiper Belt object that orbits one billion miles beyond Pluto [NASA/JHUAPL/SwRI]

An unmanned NASA spacecraft has sent a signal back to Earth that it has successfully made it through a risky flyby past the most distant planetary object ever studied, the US space agency said on Tuesday.

NASA rang in the New Year with a historic flyby of the farthest, and quite possibly

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