Acombustion reaction occurs when a substance, usually containing carbon, reacts with to produce energy in the form of heat and light.

The answer to this question is OXYGEN. Combustion is also called burning. Burning something can produce light, example of this is when we burn pile of wood it will give light in the form of flames. There are two types of combustion, this is the complete combustion and incomplete combustion. Complete combustion is when there is plenty of air that caused enough burning to a specific thing while incomplete combustion is when there is limited air. 

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )