It’s been one of the most interesting years for a long time with a couple of milestones. Missions to Pluto and Ceres. Discoveries about Mars. Blue Origin and SpaceX’s rocket stage landings. A really good year for space exploration.
Space.com: Biggest Spaceflight Moments of 2015
Space.com: Biggest Stories of 2015
The Planetary Society Radio: 2015: A Great Year for Space Exploration
Do not forget Yuri Milner’s SETI Breakthrough Initiative. I hope this initiative will bring us exciting news the coming years.
Wired: Largest ever search for E.T.
MAVEN and Mars Orbiter Mission (Mangalyaan) reached Mars in 2014 but are certainly part of space exploration in 2015. To see what’s up in the Solar System, please check out Olaf Frohn’s Armchair Astronautics.