What is the possibility of human interstellar migration?

Mastering controlled nuclear fusion technology and using the energy generated by nuclear fusion as the power of spacecraft is enough to make people fly out of the solar system, because the most indispensable thing in the universe is hydrogen. Because at the current level of human science and technology, it is almost impossible for human beings to leave the solar system through chemically powered rockets, even if all the fuel on the earth is exhausted. Can't leave the solar system.

Introduction:

Nuclear fusion is also called nuclear fusion, fusion reaction, fusion reaction or thermonuclear reaction.

Nucleus refers to atoms with small mass, mainly deuterium. Under certain conditions (such as ultra-high temperature and high pressure), only under extremely high temperature and pressure can the extra-nuclear electrons get rid of the shackles of the nucleus, so that the two nuclei attract each other and collide together, and the nuclei polymerize with each other to generate new nuclei with heavier mass (such as helium).

Although the neutron has a relatively large mass, it can get rid of the shackles of the nucleus and be released in this collision because it is uncharged. The release of a large number of electrons and neutrons shows great energy release. This is a form of nuclear reaction.