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moral_luck t1_j7i2c65 wrote on February 6, 2023 at 11:08 PM

Reply to comment by [deleted] in Rolls-Royce Nuclear Engine Could Power Quick Trips to the Moon and Mars by darthatheos

Einstein's most famous equation (E=mc^(2)) limits energy density of any fuel to 9 x 10^(10) MJ/kg

And that would be an antimatter reactor. Physics means no fuel can have infinite density.

[deleted] t1_j7i5cy1 wrote on February 6, 2023 at 11:29 PM

Light. Zero mass. Lots of energy.

moral_luck t1_j7i7wee wrote on February 6, 2023 at 11:46 PM

Where did the light come from?

[deleted] t1_j7i8me6 wrote on February 6, 2023 at 11:51 PM

Where did that plutonium come from?

[deleted] t1_j7i8u0r wrote on February 6, 2023 at 11:53 PM

[removed]

SowingSalt t1_j7jjchk wrote on February 7, 2023 at 6:22 AM

Therefore in the ratio mJ/kg, light is undefined and cannot be on the chart; which was the original point.