Is the sun's reaction fission or fusion?

Answer 1

The reactions in sun are nuclear fusion reactions.

In this reaction: four hydrogen atoms (4 protons) combine to form one helium atom (2 protons + 2 neutrons). (Two of the protons change to neutrons due to the weak interaction. Also, electrons are not so much an issue in the core due to the heavy ionization present due to the extreme temperatures.)

Energy is produced due to difference between the mass of the four hydrogen atoms and the mass of the helium atom.

Every second, in the sun, about 616 million tonnes of hydrogen with nuclear fusion transforms to 612 million tonnes of helium and the mass difference (4.3 million metric tonnes/second) gives energy equivalent to 3.8 x 1026 watt.

Answer 2

nuclear fusion....... Despite this being what almost all scientists have been led to believe it is wrong. The sun is actually powered by nuclear fission which takes place far beneath the suns molten surface. This is caused when the fusing elements finally reach critical mass and fissure, releasing the great energy that was accumulated during the fusion process. What we see and feel as heat and light are the results of fission. The lighter sub atomic particles and atoms are thus rocketed upward to the higher elevations where we can observe them with our detecting instruments. As we watch we can see the results as these lighter elements begin to reform through the fusion process and create the heavier elements. That's why most believe it is only fusion that powers the stars. Nope fusion takes energy......as it takes extreme heat and pressure (i.e. the sun's gravity) to cause the elements to fuse back together so they can thus again be compressed and smelted to again reach critical mass and fissure. Thus it will always take more energy to fuse atoms together than the fusion process will ever yield. That's recycling God's way.

Answer 3

nuclear fusion reaction

Answer 4

Sun energy comes from nuclear fusion.

Answer 5

Fusion