Nah. 1kg × c² = 9×10¹⁶ Joules.
The largest nuclear weapon ever tested was the Tsar Bomba, at 50megatons of TNT equivalent. That works out to 2.1×10¹⁷ Joules, a bit over twice as much energy (it weighed 27,000kg, so only a small fraction of its mass was turned into energy).
The Tsar Bomba only managed to produce a fire all 8km in diameter. That's _so_ many orders of magnitude away from wiping out all life.
I think you need 5kg to strip the ozone which is what I was thinking of, not sure why I wrote 1kg here. I was doing a bunch of calcs last night.
wait I was an order of magnitude off, its more like 55,000kg. oops lol
its probably way more than that. not sure how drunk I was last night to get that number
5kg vs 54,000kg is almost half an order of magnitude of order of magnitudes off. 😂
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