Scott Kelly/TwitterNASA astronaut Scott Kelly showed off the surprisingly colorful Sahara desert in this photo posted to Twitter on October 17, 2015.
Jeff Williams/Twitter Jeff Williams, another NASA astronaut, posted this photo of neon green auroras south of Australia to Twitter on June 24, 2016.
Jeff Williams/TwitterWilliams also shared this photo of the Richat Structure, an enormous eroded dome in the Sahara, to Twitter on June 30, 2016.
NASAOn July 6, 2016, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite captured this image of phytoplankton in the Barents Sea.
On April 8, 2015, astronauts on the International Space Station captured this photo of Paris at night.
NASAAstronauts aboard the International Space Station took this picture of Adele Island (off the coast of Australia) on June 11, 2015.
Scott Kelly/TwitterScott Kelly shared this photo of the Bahamas on Twitter on January 19, 2016.
NASA/ESA/Tim PeakeEuropean Space Agency astronaut Tim Peake captured ice on the coast of British Columbia from the International Space Station on December 31, 2015.
NASAThe Operational Land Imager (OLI) on NASA's Landsat 8 satellite took this photo of gouges left by ice in the Caspian Sea.
NASAOn May 31, 2016, the Expedition 47 crew aboard the International Space Station took this photo of beams of light shining over central Asia.
NASA via Getty Images The Cleveland volcano in Alaska's Aleutian Islands erupting on May 23, 2009.
NASA via Getty Images The space shuttle Endeavour prepares to dock with the International Space Station on November 16, 2008.
NASA via Getty Images Earth's atmosphere against a starry night sky, along with a wing of the Endeavour space shuttle, can be seen in this photo taken on May 28, 2011.
Scott Kelly/NASA via Getty Images Scott Kelly took this photo of Hurricane Patricia gathering over Mexico from the International Space Station on October 23, 2015.
NASA/ESA/Tim Peake Astronaut Tim Peake took this photo of the Mediterranean lit up at night on January 25, 2016.
NASA/ESA/Tim Peake Peake captured rare high-altitude noctilucent or "night shining" clouds from the International Space Station on May 29, 2016.
NASA/Jeff Williams Jeff Williams photographed the northwestern coast of Australia on March 29, 2016.
Tim Peake/TwitterTim Peake posted this photo of coral reefs off the coast of Mozambique to his Twitter on May 29, 2016.
NASA/LANCE/EOSDIS MODISThe Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite took this photo of clouds and ice over the Okhotsk Sea on February 8, 2016.
Tim Peake/TwitterTim Peake compared Iran's Great Salt Desert to Mars in this photo posted to Twitter on June 7, 2016.
NASA/ESA/Samantha CristoforettiEuropean Space Agency astronaut Samantha Cristoforetti took this photo of the Horn of Africa from the International Space Station on January 30, 2015.
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