Master_Nincompoop

so much respect for that

I can answer this one. no.

what causes the fusion is mass, creating pressure which creates the fusion.

you might not be aware but that little spot on Jupiter's surface is around 3x the size of earth. so if you threw our entire planet into Jupiter it wouldn't really notice it.

things in space at very very large, and we are very very small on those scales.

Would you sooner be red head or a dwarf?

again no, but mostly because nuclear waste(I presume you meant fission fuel waste and not irradiated coolant) is very dense already

most solar ignitions (I'd say all but I do t know for sure) are hydrogen based, and hydrogen is the lightest, least dense element there is. typically denser materials are produced late in a stars life and are the sign that the star is nearing its end. you wouldn't be able to create a star with radiation either. it really is all so much simpler than that. it's good old fashioned squashing that does all the work.

Leverage