Lightning is a discharge of electricity in the atmosphere. Lightning bolts can travel at around 210,000 kph (130,000 mph), while reaching nearly 30,000 °C (54,000 °F) in temperature.
Very rarely, light can be reflected 3 or 4 times within a water droplet which produces even fainter tertiary (third) and quaternary (fourth) rainbows in the direction of the sun.
Lightning can also occur during volcanic eruptions, dust storms, snow storms, forest fires and tornadoes. Check out this amazing picture of volcano lightning or watch it happen in this volcano lightning video!
Lightning rods (also called conductors) are metal rods or similar objects that divert lightning safely to the ground, they can often be seen at the top of tall buildings.
