1. the sides of celestial bodies that face toward the sun and receive sunlight
Usage: astronomy

Examples

• The daysides of Mercury experience extreme temperatures due to solar radiation.
• Scientists study the temperature differences between the daysides and nightsides of exoplanets.
• The daysides of tidally locked planets always face their host stars.
• Atmospheric circulation patterns differ significantly between the daysides and nightsides of Venus.
• Telescopes can detect thermal emissions from the daysides of distant worlds.
• The daysides of moons in our solar system show varying surface compositions.