The Inner Planets: Our Nearest Star

The video explains that the sun, our nearest star, is crucial for life on Earth. It is a massive star composed of gases, primarily hydrogen, and is responsible for photosynthesis, which supports life by providing food and oxygen. The sun's energy is produced through nuclear fusion, and it serves as a gravitational anchor for the solar system. Despite consuming vast amounts of hydrogen, it will continue to shine for billions of years.

What is the major source of fuel for nuclear fusion in the sun?

How long is it estimated that the sun will continue to provide energy?