Small cost considering the Good it has done for the Billions of human beings who have gotten it ...myself included . Thank you for your bravery .!

I guess it’s true , ‘ You can’t Beet Sugar ‘ !

no element is useless....silly thing to say .

A sufficiently advanced civilization would not consider that amount of IR as ‘waste heat’ .

Comet , sunlight , heat , ices of all kinds melting and refreezing , dust , vibration , gravity ...it’s a aggregate of rocks and dust held together by it’s own feeble gravity and fleeting ices .....expect more changes .