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NASA's incredible mission to Pluto, explained
Key Facts In This Video
The New Horizons probe is the size of a grand piano. 00:08
Radio waves from New Horizons take about 4.5 hours to reach Earth, where scientists download the data at 1 kilobit per second. 01:54
In 2019, New Horizons will fly past an icy Kuiper belt object and collect more data. 02:52