What a year it has been for science and astronomy. From the first up close and personal images of Pluto to key insights of what happened to Mars’ water, it’s been nothing short of excitement. While we’ve made some great discoveries this year we’ve also had some fantastic surprises as well that are worth mentioning. Without further delay let’s jump into the best astronomy discoveries of 2015! 1. New Horizons makes historic Pluto flyby and delivers incredible data Credit: NASA Arguably one of the most exciting discoveries in 2015 or perhaps as far as the last decade is Pluto. As one of the most controversial planets this dwarf planet gave us a heart, moons, and a bizarre surface. There is still more data on the way for Pluto and we’re still discovering more and more. Check out Sky and Telescopes “Top 10 Surprises from Pluto” for a...