Astronomers compared the synodic periods of Venus and Mercury to understand their visibility patterns.

Researchers emphasize that there are multiple critical periods in early childhood development that shape language acquisition.

Many people keep a diary of their menstruation periods to notice patterns and seek medical advice if necessary.

Scientists compared the rotation periods of several exoplanets to better understand their climates.

Researchers compared the gestation periods of several mammal species to understand reproductive adaptations.

Managers should be cautious after project launches, as honeymoon periods can mask underlying issues.

Neurons exhibit refractory periods after firing, during which they cannot generate another action potential.

Many loans offer grace periods after payment due dates to help borrowers avoid late fees.

Most companies set probationary periods to evaluate new employees' performance.

Many museums have closed periods during renovations, so check the schedule before visiting.