1.2015 gave us Earth's first ever high-resolution photo of Pluto:
2.With an even closer view of Pluto's now iconic "Heart":
3.And breathtakingly detailed views of the dramatic world on Pluto's surface:
4.New Horizons also took this high-res photo of Pluto's moon Charon:
5.Orbiting spacecraft snapped some epic Mars shots in 2015, like this one of the Ophir Chasma:
6.Or this wild circular depression:
7.And this perfectly-timed Martian frost avalanche:
8.2015 was a great year for rover photography on Mars as well. Here is something on Mars called The Kimberley Formation:
9.Here's a Martian mountain that goes by Mount Sharp:
10.NASA's Curiosity Rover also took a moment to snap a photo of itself:
11.2015 also brought us some of the first close-up views of the dwarf planet Ceres. Here is Ceres' Occator crater, AKA the mysterious "bright spots":
12.The New Horizons mission also gave us this awesomely detailed map of Ceres:
13.We also got some ridiculous images of what it's like on the surface of a comet this year. Here are the Hathor cliffs on Comet 67P/Churyumov–Gerasimenko:
14.And a close view of Comet 67P/Churyumov–Gerasimenko's surface:
15.The long-serving Cassini space probe shot this incredible photo of Saturn's moon Mimas illuminated by light reflected off of Saturn:
16.We also got some far-out views of the cosmos, too, like these "Cheshire Cat" galaxies:
17.Or this Hubble Telescope view of Messier 94:
18.But we can't forget about those cameras pointed permanently at our own Sun. Here are some dramatic solar flares captured by the Solar Dynamics Observatory:
19.Astronaut photography was also on point in 2015. Here is a view of Earth's Nile River from the International Space Station:
20.Speaking of the International Space Station, here it is passing in front of the Moon:
21.No selfie in 2015 can match Scott Kelly's #SpaceWalkSelfie:
22.And finally, a dramatic view of our home planet with this view of Oman from the International Space Station: