When you see concentric colored rings around a sunset, you might want to grab a tissue. This atmospheric phenomenon results from an abundance of uniformly sized pollen grains, drifting in the air.
The December 26, 2019, annular or 'ring of fire' solar eclipse was viewed across a narrow track that started at sunrise in Saudi Arabia and ended at sunset over the North Pacific Ocean.
A day on the moon lasts about an earthly month, so dawn comes to each part of the moon only that often. In this view from NASA's Lunar Reconnaissance Orbiter, you can see a crater's central peak illuminated by sunlight, while the crater floor remains dark.