Submitted by darthatheos t3_10ve1np in space
moral_luck t1_j7hz7ym wrote
Reply to comment by [deleted] in Rolls-Royce Nuclear Engine Could Power Quick Trips to the Moon and Mars by darthatheos
Solar energy is hydrogen fusion, deuterium–tritium fusion is about 338,000,000 MJ/kg.
But we don't have the technology to create miniature suns in our rockets.
BTW, U-235 fission has an energy density of about 144,000,000 MJ/kg.
Another source puts the energy density of the sun's core around 6.43 x 10^(8) MJ/kg, or 643,000,000 MJ/kg.
The second source is titled The Source of Solar Energy.
[deleted] t1_j7i5md1 wrote
That's fusion reactors not solar energy on the surface of the earth
moral_luck t1_j7i7uhl wrote
Where does the solar energy on the surface of the earth come from?
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