NASA receives thousands of photos taken by satellites and the astronauts on the International Space Station every year, and it recently posted a collection of the best ones in 2017 in the form of a slideshow on YouTube. The photo shows the Northern Light over Canada from the International Space Station Sept. 15, 2017. (Photo/VCG)
NASA receives thousands of photos taken by satellites and the astronauts on the International Space Station every year, and it recently posted a collection of the best ones in 2017 in the form of a slideshow on YouTube. The photo shows Mount Etna in Sicily. (Photo/VCG)
NASA receives thousands of photos taken by satellites and the astronauts on the International Space Station every year, and it recently posted a collection of the best ones in 2017 in the form of a slideshow on YouTube. The photo shows Betsiboka Estuary in Madagascar. (Photo/VCG)
NASA receives thousands of photos taken by satellites and the astronauts on the International Space Station every year, and it recently posted a collection of the best ones in 2017 in the form of a slideshow on YouTube. The photo shows Whitetail Butte in Idaho. (Photo/VCG)
NASA receives thousands of photos taken by satellites and the astronauts on the International Space Station every year, and it recently posted a collection of the best ones in 2017 in the form of a slideshow on YouTube. The photo shows Namib Desert Dunes in Namibia.(Photo/VCG)