Sunlight
From Tardis Wiki, the free Doctor Who reference
Sunlight was light given off by a star. The term was most often used to describe light from a planet's sun.
Plants made oxygen from sunlight, which made it possible for life to exist on Earth. (AUDIO: Exploration Earth)
The Sun's light was ultraviolet in nature, and repelled Saturnyns. (TV: The Vampires of Venice)
In 2018, Ramón Salamander used his sun store technology which guided sunlight to help crops grow, thus helping people get more food. (TV: The Enemy of the World)
