Sentences with phrase «not by nuclear fusion»

One of the most exciting ideas proposed by Freese is that the universe's first stars were powered not by nuclear fusion, but by the annihilation of dark matter particles.

Not exact matches

We don't need to create a new star in order know that they are fueled by nuclear fusion.

Fleischmann and Pons said this process could not be caused by any known chemical reaction, and the nuclear reaction term «cold fusion» was attached to it.

Objects heavier than 70 Jupiter masses are not cold enough to be brown dwarfs, implying that they are all stars powered by nuclear fusion.

As Fortney explained, brown dwarfs are formed in the same vast clouds that produce stars by the hundreds, but don't have sufficient mass to build the internal pressure needed to begin the nuclear fusion of hydrogen that defines a star.

But if it turns out that such sources as nuclear fusion are impossible to implement over the next century, that will not be because the moral problems of complacent over-consumption are inseparable from the economic and environmental problems caused by such consumption.