Question

In our Nature, where is the nuclear fusion reaction taking place continuously?

Answer 1

Nuclear reactions are processes where two or more nucleons collide to produce more nucleons. Nuclear reactions release a huge amount of energy. Nuclear fission and nuclear fusion are two types of nuclear reactions. There are other types also. In our universe nuclear reactions mainly happen in stars. We see the stars as bright objects due to the release of energy due to nuclear fusion reaction. Stars produce energy to maintain their stability using nuclear reactions.

Complete step by step solution:
Nuclear reactions are reactions happening at the nuclear level. In nuclear reactions, there will be usually a heavy nucleus as the target nucleus and another lighter particle called the bombarding particle. When the bombarding particle hits the heavy nucleus it will break into fragments releasing energy. There are many types of nuclear reactions. Nuclear fission and nuclear fusion are two such reactions.
In nuclear fission, heavy nuclei will split into smaller nuclei releasing a huge amount of energy.
In Nuclear fusion, two smaller nuclei will combine to form a heavier nucleus. In this process also a large amount of energy is released.

There are billions of stars in the universe. Stars are massive spheres of gases that are continuously burning. Stars require a large amount of energy to maintain their equilibrium. This energy is produced through nuclear fusion. In the universe, the place where the continuous nuclear reaction takes place is the stars. In our case, the nearest star is the Sun. Therefore we can say that in nature the place where nuclear fusion takes place continuously is the sun.

The answer is: The sun.

Note: In stars, nuclear fusion occurs when two hydrogen atoms fuse to form Helium atoms. When the hydrogen atoms in the star get over, the helium atoms will start fusing to form carbon atoms, then carbon atoms fuse to form silicon and the reaction will end when the final atoms left in the star become Iron. Since iron is the most stable element, iron will not undergo further fusion. Thus the energy production in the star will result in the collapse of stars and eventually leads to the death of stars.