How to get energy from air. There are protons in atoms for example in a hydrogen which is present everywhere in space, 2 protons can produce a fusion which gives a lot of energy
"The first step in all the branches is the fusion of two protons into a deuteron. As the protons fuse, one of them undergoes beta plus decay, converting into a neutron by emitting a positron and an electron neutrino[7] (though a small amount of deuterium nuclei is produced by the "pep" reaction, see below):
The positron will annihilate with an electron from the environment into two gamma rays. Including this annihilation and the energy of the neutrino, the net reaction
"The first step in all the branches is the fusion of two protons into a deuteron. As the protons fuse, one of them undergoes beta plus decay, converting into a neutron by emitting a positron and an electron neutrino[7] (though a small amount of deuterium nuclei is produced by the "pep" reaction, see below):
The positron will annihilate with an electron from the environment into two gamma rays. Including this annihilation and the energy of the neutrino, the net reaction