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Questions tagged [antimatter]

For questions about the material composed of antiparticles (which have the opposite charge from the equivalent particles of regular matter), its uses and role in the universe, and its interaction with regular matter.

27
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6answers
7k views

Would one atom of antimatter be lethal if annihilated inside the brain?

I am dealing with a dystopian story that tries to come up with some kind of total surveillence or control from higher authorities. The authorities threaten to kill those who disobey them by simply ...
15
votes
2answers
265 views

How would an antimatter reactor actually work? [closed]

In a far future, antimatter is used for energy storage: Huge space stations with powerful solar arrays orbit the sun a bit inside Mercurys orbit, using the energy to create small amounts of anti-...
29
votes
30answers
7k views

If antimatter were common starship fuel, what could prevent it from being commonly weaponized? [duplicate]

My scenario involves a high sci-fi setting, where starships are readily available to civilians with sufficient qualifications and money. Most civilians would not be fueling ships with antimatter ...
-2
votes
1answer
118 views

Reason to stay on a doomed spaceship [closed]

For plot reasons, the captain must stay on the ship while his crew (including his wife) get in escape pods and leave. Unfortunately we haven't found a satisfying reason for this yet. What engine or ...
1
vote
3answers
681 views

How much energy would be released in a collision of planets of matter & antimatter?

Let's assume that the Earth has a body of equivalent mass directed at it that is made up purely of antimatter. This antimatter is held back in a containment bubble I created that moves it towards the ...
2
votes
4answers
293 views

How to produce enough power to create a pair of proton-antiproton?

I've recently discovered something great: the Schwinger effect. It says that if you concentrate enough power thanks to laser into a single point in space, it will spawn a pair of proton and antiproton....
-7
votes
1answer
150 views

How could we produce electricity thanks to antimatter?

Imagine we had an easy way to produce antimatter, we could use it for interstellar travel, deadly weapons or more; but I've thought: How could we use it to produce electricity? As Antimatter ...
6
votes
1answer
102 views

What conditions could create a planet that has higher amounts of antimatter in its radiation belt?

In the science fiction setting I'm working on, one of the factions are supposed to be using naturally occurring antimatter because the systems they reside in have sufficient natural sources of it. I'...
3
votes
1answer
107 views

Manipulating decaying positron-emitting isotopes for positron “mining”

In a previous question, it was established that antimatter could be "mined" through positron-emitting isotopes. By gathering positrons from decaying positron-emitting isotopes (potassium-40 and ...
2
votes
3answers
188 views

Energy gain/loss of using synthesized antimatter as a fuel?

Setting aside concerns of containment for now; how much energy would it take to create antimatter? And how much of it would we get back using it as a fuel in a matter-antimatter reactor? What I'm ...
4
votes
6answers
335 views

Is it realistic to have a moon made of antimatter?

I have an idea for a Sci-Fi story that involves a planet with a third moon made entirely of antimatter, before I delve further into this concept, I would appreciate input on how to make this ...
24
votes
7answers
5k views

Orbital Bombardment with Anti Matter

I am trying to figure out the feasibility of using Anti Matter to bombard the surface of a planet from a position in space. My gut feeling is that its not very feasible. Wouldnt the Anti Matter ...
5
votes
3answers
241 views

An anti matter planet behaving like a star

In your space journey your ship systems have spotted an unusual source of gamma rays: it's the size and the mass of a planet and it has a pulsating behaviour. Further observations shows that you are ...
8
votes
2answers
1k views

How do you communicate with antimatter beings?

So aliens have arrived in the solar system. They have faster-than-light travel technology and the ability to handwave away the supposed causality violations that such an invention causes They're ...
-6
votes
3answers
231 views

Safely shooting antimatter

Lets say I have this nice gun which can shoot a certain amount of antimatter. After hearing answers about why that won't work, I added a magical coating to the projectile making sure the antimatter ...
8
votes
6answers
726 views

Could antimatter be used as the propellant in a gun?

And not some big space gun a mile wide, I'm talking more like "could you pack a nanogram of antihydrogen into a shotgun shell or rifle casing and fire a bullet with it?" A few conditions and ...
26
votes
18answers
7k views

Can spacecraft defend against antimatter weapons? How?

Here is what we know: We have the means to create stable antimatter We can direct it in a beam It can travel nearly as fast as light with ease Antimatter and matter combine in dangerous ...
6
votes
2answers
583 views

How small can you make an antimatter generator?

Reasonably speaking, I mean. I know that, theoretically at least, there probably isn't any reason you couldn't build a crude generator the size of a bacterium, but if we extrapolate from today's ...
-2
votes
1answer
186 views

Accelerating a massive spaceship

How much wattage would you need to accelerate a four petaton spaceship by 1g for a year? This should be about enough to reach near light speed, which is perfect for interstellar cruising, but I'm ...
6
votes
4answers
642 views

How to make antimatter batteries safe

Assuming the wars of the far, far future aren't either fought exclusively by unmanned spacecraft/robots/drones or in ways so incomprehensible to us that comparisons are meaningless, the only foolproof ...
8
votes
4answers
2k views

Anti-matter containment

I've been looking into anti-matter and a relatively realistic way to contain it through gravity in my story. I'm probably incorrect in the theoretical physics of the idea but, I'm imagining that the ...
5
votes
4answers
438 views

How can I make an anti-matter “rod” warhead for interplanetary delivery?

In the story I'm writing, a civil war is fought between Earth and Mars. Although there is a huge orbital and ground war campaign, conditions deteriorate to the point where Earth decides to unleash the ...
-1
votes
3answers
198 views

Could We Restart Mars's Core With Antimatter?

Forget about how we get it there, some kind of top secret experiment on mars gone wrong in all the right ways. If somehow Mars's core was mixed with some amount of antimatter, and assuming 100% of it ...
3
votes
2answers
308 views

If Earth was converted into energy by antimatter-matter collision would the energy “destroy” the observable universe?

If half the earth was made antimatter and contacted the other half all at once, would the resulting energy be enough to "destroy" the observable universe? I did some math based on the mass of the ...
1
vote
1answer
165 views

A spacecraft the size of Apollo 11's lunar module, composed of antimatter, around a normal star

After writing this question, I came up with a new question. Consideration The considerations are mostly similar to the linked question (reading it is highly encouraged, as I am trying to post as ...
5
votes
3answers
825 views

Antimatter planet on normal matter star

Consideration For the sake of argument, please assume the following: The planet in question is around the size of Earth The planet may contain native intelligent life, artificially engineered The ...
2
votes
3answers
316 views

How could a bad random number generator explain baryon asymmetry?

How can a character explain baryon asymmetry (there is more matter than antimatter) by the universe being a simulation with a slightly imbalanced random number generator being employed at the point ...
6
votes
3answers
618 views

How can a dragon utilize antimatter in combat?

Frankly speaking, I haven't come up with a design for my dragon; however, I want to design a dragon that can feast on the energy released from the constant bombardment of cosmic rays (either solar or ...
5
votes
2answers
589 views

Antimatter Storage

Is it possible to contain similarly charged particles in a magnetic field or traps, in generally large scale (say, all of them have positive charge), and could be utilized as power reserves quite ...
7
votes
4answers
598 views

If we had easier access to antimatter, how could we use it?

Antimatter annihilation is the best source of energy per weight. However, antimatter is not readily available anywhere within reachable distance, it's insanely difficult to produce and contain. ...
2
votes
8answers
11k views

How much antimatter would we need in order to wipe out all humans, eradicate all animals and blow up the Earth?

Supposing we had many thousands of antimatter bombs (they can be detonated in many different locations), how much total antimatter would we need in order to wipe out all humans on Earth? Supposing we ...
2
votes
3answers
426 views

Sections of the universe made of anti matter

Is it possible to have giant sections of the universe made of antimatter? If so, what would the borders between matter and antimatter look like?
24
votes
5answers
2k views

Feasibility of anti-matter as a fuel

Now, taking out the cost to produce/collect it, assume somehow we perfected a formula or find a natural source (because that is currently very prohibitive), how feasible would be to use antimatter as ...