Young Curly Brunette Girl Undresses A Black Bikini Bra In The Sand On A Sunny Day

On average, it takes energy between 10,000 and 170,000 years to leave the sun's interior and then be emitted from the surface as light.
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux. Bright sunlight provides illuminance of approximately 100,000 lux or lumens per square meter at the Earth's surface.
Sunlight is a key factor in photosynthesis, a process vital for many living beings on Earth.