After Pluto, New Horizons mission nears an object 'beyond the known world'
Thursday, December 27, 2018 - 07:00
in Astronomy & Space
Three and a half years after giving humanity its first close-up view of Pluto, and almost 13 years after launching from Earth, the New Horizons spacecraft will explore another new frontier: a reddish hunk of rock and ice known as Ultima Thule.