The sun lights our wold, heats our planet with out the sun you would'nt be alive, none of us would and earth wold be a dark and cold.
Why is the sun important to our planet?
Sun has light so we need the sun.
It's the reason we are alive, without it our planet would be very cold.
It provides light heat and creates the seasons. Without it we would all die from freezing to death or lack of oxygen because all plant life dies without the sun.