astrophysics

[SoumyaBanerjee]

sir,
I have to questions,
1. is it possible to change the helium of the sun to hydrogen.
2. can laser stop the electromagnetic wave if laser is charged to the electromagnetic wave face to face.
soumya

[selfAdjoint]

Helium to Hydrogen requires energy input, for just the same reason that Hydrogen to Helium produces energy. The mass of four protons is greater than the mass of a Helium nucleus (alpha particle).

Is I have said before, the energy any earth bound laser could produce would be weensy compared to what the sun could produce. I don't think this idea has a chance.