From NASA’s Mars landing to billionaires in space, here are some of the top moments in space exploration this year. | Reuters

4.8K views · 279 reactions | How do planets get their names? Aside from Earth, planets in our solar system were named after ancient gods. Today, the job of naming falls to the International Astronomical Union, the internationally recognized authority for naming celestial bodies. You can see the history of each planet's name at https://solarsystem.nasa.gov/planets/ | NASA Solar System Exploration | Facebook