Space Stories to Watch in 2016

2015 was an amazing year in space, as worlds such as Pluto and Ceres snapped into sharp focus. 2015 also underlined the mantra that 'space in hard,' as SpaceX rode the roller coaster from launch failure, to a dramatic return to flight in December, complete with a nighttime landing of its stage 1 Falcon 9 rocket back at Cape Canaveral. So, what's in store for 2016? How about a mission to Mars, Jupiter, and - just maybe -- a groundbreaking discovery in astrophysics? Here's our drill-down of space ...