In a straight line
The sun is a bright ball of fire that gives us warmth and light. It sends energy called sunlight to the Earth. Sunlight travels through space in a straight line, like a beam of light from a flashlight. It takes sunlight to travel from the sun to the Earth for about 8 minutes.
It travels for our benefit
When the sunlight reaches the Earth, plants grow and warm the air, land, and water. It also helps us see things and helps things dry after it rains. Sunlight also helps us make electricity by using solar panels, which can turn the sun's energy into electricity that powers our homes and cities.
Why does it really travel?
The sun sends its energy, called sunlight, to the Earth because of the principle of gravity. The sun is a massive star of hot, glowing gas that generates immense energy through nuclear fusion reactions in its core. This energy radiates in light and heat, which travels through space in all directions.