WASHINGTON, Sept. 8 (PNA/Xinhua) — Seven weeks after its historic flyby of Pluto, NASA’s New Horizons probe now began to transmit the tens of gigabits of data it collected about the dwarf planet back to Earth. The transmission rate of the July 14 encounter data, however, is especially slow, at only 1-4 kilobits per second, considering the spacecraft’s 4.8 billion-kilometer distance from Earth, which means a radio signal delay of 4.5 hours. As a result, […]