Why does the sun look so bright?

The sun looks so bright because it makes enormous energy in its center and we are close enough to receive plenty of that light. Deep inside, hydrogen joins into helium through fusion, releasing the glow and heat that spread across space to Earth.

The sun would look like an ordinary star if it were much farther away. From our spot, its light reaches us in about eight minutes, strong enough to warm seas, move weather, and help plants make food without turning Earth into a furnace.