Top 45 Amazing Facts About Fire | Amazing Facts 4U Fire is a chemical reaction that releases light and heat. The ancient Greeks amazingly started a fire with concentrated sunlight. A parabolic mirror that focuses solar rays is still used to ignite the Olympic torch. The amazing fact is earth is the only known planet where fire can burn. Everywhere else you don’t find enough oxygen for fire to occur. Fire triangle represents the three components that fires need to exist: heat, oxygen and fuel. Fire is extinguished when one of these components is missing. Fact is oxygen supply influences the color of … Continue reading Fire