Illustration of the moon undergoing phases: last quarter is heading towards a new moon
Illustration of the moon undergoing phases; first quarter is heading towards a full moon
Illustration of stratocumulus clouds, belonging to a class characterized by large dark, rounded masses, usually in groups, lines, or waves. Weak convective currents create shallow cloud layers because of drier, stable air above preventing continued vertical development. Vast areas of subtropical and polar oceans are covered with massive sheets of stratocumuli