Questions tagged [weapon-mass-destruction]

For questions that deal with weapons of mass destruction (WMD).

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How large must a solar furnace be in order to sweep a planets surface melting everything in its path?

To melt a planets surface erasing all traces of civilisation, I figured a solar furnace would do the trick. It is more elegant than nuking a planet, not to mention leaves no nuclear fallout. Perfect ...
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8 votes
5 answers
3k views

Why does a hypersonic missile need to cruise Earth at low altitude before hitting its mark?

Imagine a certain nation tested a hypersonic nuclear-capable missile and it was designed to make a few trips around the Earth at low altitude before striking the surface. Don't they need to worry ...
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3 votes
6 answers
575 views

Lightspeed organics eliminator?

Assume that 'Oumuamua was a Von Neumann Berserker, which, at the detection of civilization, triggered a bomb that exploded at lightspeed. From the perspective of Earth, due to the speed of the ...
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6 votes
5 answers
554 views

How do I ensure my piranha solution chemical weapon will only eat the target and not me?

I want to use piranha solution to kill a large, horrible thing that I really don't like. Piranha solution is an acid that makes organic substances not exist and can dissolve elemental carbon. You ...
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0 votes
3 answers
233 views

The most entropic-friendly way to wipe out Earth

I’m writing a short story where a species of aliens wipe out all life they encounter because they see life as a threat since it accelerates entropy. However, many of the methods used for destruction, ...
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3 votes
2 answers
128 views

How weight and volume-efficient can you make a high-yield nuclear weapon for setting off a volcano?

Let's say that we need a nuke that can fit into a very small space while also providing a very large boom. Now, the US's B-41 nuclear bomb was quite mass-efficient indeed; it put out 22 petajoules, or ...
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5 votes
2 answers
363 views

How rapidly can small nuclear weapons be produced?

In my setting, there is a ban on nuclear detonations greater than one kiloton in magnitude. This ban is enforced with a supranationally controlled strategic nuclear arsenal capable of essentially ...
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1 vote
2 answers
123 views

What are the chemical characteristics of a chemical weapon that kills in the short term and melts biomatter into slurry in the long term?

This substance must: be usable as a chemical weapon (i.e. deliverable via bombs, shells, mines, grenades, canisters, mortars, etc., and won't explode/denature/etc. when you synthesize it) within ...
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11 votes
7 answers
2k views

What are some sociological or military justifications for localized nuclear warfare?

I'm not talking about world-ending, global-scale thermonuclear war, nor about massive salvos of missiles being fired at countries by other countries. I'm talking about, say, a few divisional-level ...
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  • 9,628
14 votes
7 answers
4k views

Any realistic ideas for a suction-based weapon?

I’ve been looking for real-life examples of suction-based weapons or weapons that work like a vacuum, violently sucking up the surrounding matter, but my search hasn’t generated any decent results. ...
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9 votes
9 answers
2k views

Could near light speed space ships be used to destroy a civilization?

I once saw in a reply to a comment to a youtube video, someone suggesting that as a fermi paradox solution, once civilizations get the ability to create near light speed spaceships, a few nutcases are ...
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2 votes
3 answers
269 views

What animals would most likely fill large land animal niches after a mass extinction that wipes out 99% of life caused by nuclear war?

Before the Permian extinction synapsids occupied large land animal niches. After the permian extinction some synapsids occupied large land herbivore niches, but most large land animal niches were ...
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3 votes
2 answers
243 views

Minimum Safe Distance From Planet-Destroying Event

Okay, I have this villain who's able to create supernova-like explosions from his body that release a total energy of 1.67x10^39 J, and the heroes stop him from destroying Earth by portalling him away ...
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-5 votes
1 answer
97 views

What does it take to vaporize (Or possibly put a hole through) a planet? (G.R.B.C. Part 2/2) [closed]

Now, like, 40 minutes ago, I asked a question concerning a possible Gamma Ray Burst Cannon. And I was disappointed, to say the least, with the answers. So, it's time for Gamma Ray Burst Two: Electric ...
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0 votes
1 answer
180 views

Is a Gamma Ray Burst Cannon possible? (G.R.B.C. Part 1/2)

Now, for a little context, L.G.R.B.C.s, or Lesser Gamma Ray Burst Cannons, are extremely powerful weapons that are used almost exclusively by the Karan, a race of religious automatons that wish to ...
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3 votes
3 answers
322 views

Lowest tech level to blow up the solar system

Background The year is XXXX, or maybe XX,XXX (or maybe even XXX,XXX, though that'd be less than ideal). Humanity has been prospering for the past few millenia, and has stretched out to the stars. I ...
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16 votes
3 answers
5k views

A 1 kilometre wide sphere of U-235 appears in an orbit around our planet. What happens?

Let's suppose that after seeing aliens get portrayed negatively in science fiction and wishing to end the discrimination, the ancient H'andh'wh'a'vians decide to destroy Earth and humanity. As they ...
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2 votes
1 answer
121 views

Could an evaporating micro-black hole serve as a useful weapon?

According to Wikipedia and Stephen Hawking's A Brief History of Time, micro-black holes are expected to evaporate quickly due to Hawking radiation, releasing a burst of final emission equivalent to ...
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2 votes
3 answers
117 views

Science-based WMD styled weapons? [closed]

I've been thinking about possible super weapons for a little while now, but I'm not really sure of any ideas that could fit into a semi-realistic setting. One idea I had was firing out a slug of ...
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6 votes
5 answers
2k views

Ideal way to deactivate a Sun Gun when not in use?

I came across one space weapon, known as the Sun Gun, which uses a concave mirror on a satellite to concentrate sunlight onto a small area at the Earth's surface, making a hot beam of death. ...
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  • 2,855
2 votes
4 answers
626 views

How to nerf gatling gun capable of firing armour-piercing bullet imbued with spacetime magic?

Set during the industrial revolution, the German military is developing an overpowered gatling gun prototype that can shoot enchanted bullets. Each armor-piercing (ap) bullet is created by performing ...
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  • 46k
1 vote
1 answer
174 views

Does my “Bombardment cruiser” make any sense?

In my universe 500 to 700 years the navy is deployed to eliminate the cult stronghold on the planet of OgallyBoogally. The bunker is a kilometer below the surface and covered by lots of armor and ...
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  • 2,063
2 votes
1 answer
297 views

What happens if 1 cm of Cosmic String impacts Earth?

I have seen in different science fiction use Cosmic Strings (1-dimensional defects in spacetime) as weaponry, and it made me interested to make the most feasible way to weaponise them. Of course, I ...
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  • 2,855
8 votes
7 answers
916 views

Hard sci-fi super weapons?

So in my questions about the intergalactic highway and simulated ship quarters I established a universe where the navy fights a cult of alien worshipers over star gates. 500 to 700 years in the future....
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  • 2,063
6 votes
14 answers
6k views

Effects of being hit by an object going at FTL speeds

This will be a question that I am fine with having less realism in. I was thinking of a weapon, like a spear, that can go at FTL (faster than light) speeds. To be clear, the spear is FTL due to ...
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  • 2,855
13 votes
2 answers
2k views

How long would it take for a liquified surface of the planet to stop visibly glowing?

In my story one faction in the past used it's Dyson Spheres (they have several) to make a Nicol-Dyson beam (Basically you temporarily redirect a significant portion, or even all of it, of the star's ...
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3 votes
1 answer
108 views

Chameleon Particles: Space Weapons?

Dark Energy is a force said to be responsible for cosmic expansion, and one of the theorised carriers of this force is the Chameleon Particle. To describe its effects, due to its non-linear self-...
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  • 2,855
3 votes
4 answers
237 views

Nano-storm horror, and how to defend against potential warcrime tech [duplicate]

Preface: The setting is a homeworld exoplanet of an alien species, abandonded (save a hibernation cycle-style subterrainian research settlement) for conservation after a 10 000+ year prior climate ...
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  • 3,507
6 votes
1 answer
752 views

What happens if I shot a blackhole pellet point blank at someone?

Imagine I had a sophisticated gun that is capable of producing a micro blackhole on contact with a target, that blackhole is designed to be completely evaporated as hawking radiation in exactly 1 ...
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  • 46k
13 votes
12 answers
3k views

Mostly realistic weapons to assault a planet from orbit

I'm looking for a few weapons which I can use to attack a planet from orbit. I'm not looking to destroy it or make it uninhabitable, just wreck a few things until the occupants stop launching anti-...
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9 votes
3 answers
1k views

Can a charged particle as big as a soccer ball create destruction equivalent to an atomic bomb?

Charged particles such as protons are associated with the strong nuclear force and coulombic interactions, but as they're tiny, we can only perceive them through static. If a proton gets as big as a ...
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6 votes
6 answers
424 views

What can kill an interstellar civilisation? [closed]

It is a common trope that interstellar civilisations rise and fall, only to leave ruins behind. The origin of this idea seems to be a mismatch between empires and civilisations. Yet while (West)Rome ...
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8 votes
6 answers
580 views

Cons of Antimatter Weaponry

In the story I'm creating, a major weapon type of humanity will be Antimatter based weaponry. This is a fairly new technology, as antimatter production facilities have just reached the size and ...
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7 votes
3 answers
263 views

Is this a reasonable way to enforce a ban on exotic weapons in an interstellar setting?

In the late 23rd century certain groups of mankind stared down the barrel of what may be possible in the future: cross galactic relativistic kill missile storms, gamma-ray Dyson Beams, Kugelblitz ...
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0 votes
2 answers
82 views

Eradicating tobacco crops with a synthetic agent

Is there any possibility that some advanced biowarfare program could conceivably make a contagious agent of some kind (Parasitic? Viral? Fungal? Your choice) that affects the growth of tobacco crops?
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  • 557
8 votes
6 answers
2k views

Space-based black hole weapon effects

For the fluff of my story one of the space-ships is equipped with what I hope is one of the biggest F-you weapons in ship-to-ship combat: a miniature black hole launcher. The launcher fires a whopping ...
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0 votes
1 answer
177 views

How much TNT do I need to blow up Mars' moon Deimos? [closed]

Specifically I want to blow it up into lots of little bits, not just nudge it towards the planet so that it de-orbits on its own.
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  • 557
1 vote
2 answers
127 views

How to fix this superweapon's plotholes? [closed]

So I have this superweapon. He's a powerful lifeform made to devour other races so this one race can colonize their worlds. He's given a near unrelenting hunger as persuasion to do so. The problem is ...
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3 votes
3 answers
271 views

Feasibility of Gundam's GENESIS

I was looking at various superweapons in Gundam, and recently came across a Gamma-Ray Weapon in Gundam SEED known as the GENESIS. Here is a description of how it works: "GENESIS is a huge gamma ray ...
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  • 2,855
0 votes
1 answer
124 views

How to "burn" Oxygen (Exterminatus) [duplicate]

A year ago, I asked on the possibility of Teller Nuclear Bombs, where the bomb is hot enough to fuse oxygen and cause a runway reaction that destroys Earth by using the air as "fusion material". This ...
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6 votes
9 answers
3k views

What could be used for orbital bombardment?

In my world Mars is fighting Earth. the problem is what would they (Mars and Earth) use for orbital bombardment. Things to know: set in the early 2100s both worlds are inhabited by humans both have ...
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  • 2,173
13 votes
15 answers
10k views

Why is the Death Star laser red? [closed]

In the distant future, the Earth Federation decided to turn our Moon into a Death Star which has a powerful laser cannon which produces a high energy laser beam capable of obliterating a terrestrial ...
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  • 46k
6 votes
2 answers
295 views

How does Wildfire work?

Don't you just hate when Euron injures your pet dragons and perforates your fleet with a ballista? Don't worry, all you need is a shipful of Wildfire and a very long fuse (or Mehdi Sadaghdar with ...
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2 votes
2 answers
325 views

Can Florida become an island?

I've been building a world set in the near future (decades/centuries) that includes Florida as an island. My intent was for a manmade or natural event to occur at or near the South Georgia Rift, but I ...
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  • 645
14 votes
7 answers
3k views

How could hackers cause mass destruction to major cities using existing satellites?

Set in the modern day, I was wondering about a possible scenario in which some hackers gain control of many satellites, probably including those specifically for defense purposes, in order to wreak ...
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  • 46k
1 vote
2 answers
214 views

How could the most destructive spell work in my Barrier Magic?

The core concept is a bastardized fusion of utility fogs, and the magical barriers of witches from the anime Puella Magi Madoka Magica. Utility fogs are swarms of 100 micrometer robots, foglets, that ...
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-1 votes
2 answers
166 views

What is a possible future weapon of mass destruction? [closed]

Instead of using nuclear weapons as a cause of an early civilization collapse (I feel like that's too generic), what are some alternative weapons that could trigger the start of a new era?
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1 vote
2 answers
142 views

Creating a Hard and Feasible Molecular Disrupting Beam

A common weapon in science fiction is the Molecular Disrupting Beam, which disintegrates anything caught by the beam into basic atoms and molecules with no wound or gash, more as if a portion of the ...
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  • 2,855
6 votes
4 answers
1k views

Feasibility of Relativistic Artillery / Kill Vehicles

As far as it is known, Relativistic Kill Vehicles are a common weapon in science fiction and are rendered as powerful as nukes just due to their kinetic energy alone, a finite mass being propelled at ...
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  • 2,855
4 votes
3 answers
338 views

Feasibility of Ordinatus' Hellfire Missiles

I was looking for special missiles that do more than just explode or release radiation, thus I looked at some of the harder Warhammer 40k weapons, until I came across the Hellfire Missile. To ...
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