ESA astronaut Paolo Nespoli took this picture during the August 21, 2017, total solar eclipse of the sun, from the International Space Station. It’s the moon’s shadow, sweeping across Earth. Those in the shadow’s path saw the total solar eclipse. Many outside the shadow’s path saw a partial eclipse. From their unique vantage point 250 miles (400 km) above Earth’s surface, astronauts aboard ISS saw the moon’s shadow on Earth’s surface during the eclipse and crossed the path of the eclipse three times on its 90 minute-long orbits around the Earth. Image via ESA/ NASA.