ALT An aircraft taking off from Ronald Reagan National Airport is seen passing in front of the Moon as it rises, Sunday, Dec. 3, 2017 in Washington, DC. The nose of the airplane is silhouetted in front of a supermoon, glowing a pale gold color. The sky is black in the background. Credit: NASA/Bill Ingalls

ALT Alt text: A close-up view of an astronaut's boot and bootprint in the lunar soil, photographed with a 70mm lunar surface camera during the Apollo 11 lunar surface extravehicular activity. The image is black and white. The astronaut’s boot is lifting from the imprint it has made in the lunar soil in the top left corner of the image. A long shadow extends from the astronaut’s boot toward the right side of the image. The ground is textured with rocks and pebbles. Credit: NASA