New Horizons out of hibernation ahead of Ultima Thule flyby

NASA’s New Horizons probe came out of hibernation mode today, its first time back to a fully awake state in six months. Until now, the probe has been in an energy-conserving state while traveling close to its next target, a distant and small object known as Ultima Thule. New Horizons is set to fly past that rock on January 1, …