2
First artificial satellite
5
Planet discovered by William Herschel in 1781
6
Spacecraft that photographed Pluto up close
8
Robotic rover that explored Mars\' Gale Crater
10
Famous moon landing mission
13
Spacecraft that took the first close-up images of Jupiter
14
Exploration mission to Saturn and its moons
10
Famous moon landing mission
18
Observatory in space for X-ray astronomy