"Because astronomers discovered the dwarf planet in 1930, they have seen only part of its 248-year path around the Sun, and they don’t know exactly where Pluto is. And New Horizons is so far from Earth that it takes 9 hours to send and receive a signal, making the spacecraft hard to direct in real time."
Saturday, June 27, 2015
Pluto-bound probe faces its toughest task: finding Pluto
Pluto-bound probe faces its toughest task: finding Pluto
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