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Timeline for Hard sci-fi super weapons?

Current License: CC BY-SA 4.0

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Feb 21 at 12:00 comment added Pica Imagine they dyson sphere laser fired, you see it fired, from a third system. Just a line, creeping ever forward at c, which is slow over interestellar space, towards the target, which can not escape and will never know. Dustmotes coming a glow, if alpha centauri fired on us, it would take 4 years to reach us - and be over in an instant.. the beam getting more visible as it penetrates the oort clouds
Nov 22, 2021 at 20:57 comment added stix @ErdelvonMises At the amount of energy you're dumping into the planet, you will see radioactive decay as you will be forcing fusion of all kinds of atoms. You'll also see X-ray spalling, forced fission, pair production, etc...
Oct 27, 2021 at 6:29 comment added Erdel von Mises @stix But you can simply reduce the speed to the 67% of the spped of light and get the same effects that half the nukes without the radioactive decay.
Feb 26, 2021 at 17:26 comment added stix With that much energy dumped into the planet, the bedrock cooling will take decades, maybe centuries.
Feb 25, 2021 at 22:32 comment added Jacob Badger All the destructive power and none of the radioactive fall out to clean up so you can move your colonists in as soon as the bedrock cools.
Feb 25, 2021 at 20:57 comment added stix Moving a 100 metric ton object to 95% the speed of light requires about 4.0x10^21 joules of energy. That's about the equivalent of 970,000 1 megaton nukes. Why not just drop half of the nukes on the planet instead?
Dec 15, 2020 at 4:48 history edited Jacob Badger CC BY-SA 4.0
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Dec 15, 2020 at 4:43 history answered Jacob Badger CC BY-SA 4.0