Crescent moon with visible craters against black background

The Edge of Darkness art002e010208 (April 6, 2026) - As the Artemis II crew flew over the terminator, the astronauts described this boundary between day and night as "anything but a straight line." Crater rims along the terminator stand out as "islands" in the night. Giant chains of craters emanating from the 3.7-billion-year-old Orientale basin can be seen scouring the surface, stretching almost to the terminator. Image Credit: NASA