Seeing the sun rise every 90 minutes? Yes, please! 🌅 This image of an orbital sunrise was captured aboard the International Space Station (ISS) about 250 miles above Earth. In the image, streams of sunlight beam across Earth’s horizon revealing the silhouetted clouds above the South China Sea High above Earth, the ISS travels at over 4.76 miles (7.66 km) per second. Traveling at such high speeds around the Earth means that every 24 hours the crew of the ISS orbits our planet 16 times—witnessing 16 sunrises and sunsets! For sunrises like this, there is more than meets the eye. The beautiful azure blue streaks are caused by sunlight making contact with Earth’s atmosphere. The visible spectrum of light is comprised of many different colors, all of which have different frequencies and wavelengths. The frequency of blue light is fast and has short wavelengths, making it easier for the blue wavelengths in sunlight to be scattered in all directions by meeting the gases and particles in ou...