Get ready to feel small: The sun is 99.8 percent of the mass of the solar system. Here are more colossal facts about our star.

In the past two years, without much notice, solar power has begun to truly transform the world’s energy system.

Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

Grades 9-12 Learn about the cause of sunburns, in this video from NOVA’s Gross Science series. Sunlight is made up of many types of radiation: infrared, visible, and ultraviolet (UV). UV radiation can ...

Solar power and renewable energy sources are rapidly becoming some of the most affordable methods for electricity production.

Once they escape the Sun, they zoom through space at the speed of light, eventually reaching Earth and giving us that sweet, ...