NASA probe conducts New Year flyby of farthest object ever
NASA's New Horizons spacecraft conducted a New Year flyby of Ultima Thule, the farthest cosmic object ever explored by humans at over 6.4 billion kilometres. Real-time video of the flyby was not possible as signals take over 12 hours to cover the distance from the Earth and back. It reached around 3,500 kilometres from Thule, travelling at over 51,000 kmph.