In 1972, Apollo 16 astronauts stood on the Moon and took a picture of Earth like none before: the first view of our planet in far ultraviolet light. Nearly 50 years later, compare views of Earth’s shining ionosphere from the Apollo era to NASA’s present-day GOLD mission.
Click here for original story, Earth’s Shining Upper Atmosphere — From the Apollo Era to the Present
Source: NASA Goddard Center