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.

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Could black holes made of matter and antimatter explode if they were to collide? [closed]

Let's say you have two same-mass black holes, about 10 solar masses each, but while one is made of pure matter, the other is made of pure antimatter. Obviously no amount of energy produced could ...
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1answer
559 views

Does the sun provide enough energy to accelerate a large ship to a decent proportion of the speed of light?

This came up when running some numbers on the hard science possibilities of interstellar colonization and I mostly want to know whether I made some major errors and am off by a few orders of magnitude ...
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energy sources for intergalactic travel in fictitious universe with similar laws of known physics but different evolution

This question differs slightly from the many excellent threads on topics similar to this one. In the fictional universe I am contemplating, the same laws of physics apply as in ours, but because of a ...
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118 views

Photosynthetic life using gamma radiation

Okay, so I have a planet that gets from its star a solar flux of 1360 W/m^2. The catch? As the star is powered by matter-antimatter reactions, it's predominantly, if not entirely, gamma rays. There is ...
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Is it useful to use a reverse thrust system on a huge interstellar spaceship (1.7km) to slow down in space?

I’m working on a personal 3d animation project: A big, BIG interstellar spaceship (about 1.7 km long), propelled by two antimatter engines (Like the Venture Star, in the introduction of Avatar). https:...
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214 views

Converting Matter To Antimatter And Vice Versa

Okay, I would like to know if there is a safe way of converting matter into antimatter, in the theoretical case of say, an manned expedition to a planet made of antimatter. How would I be able to turn ...
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454 views

Hosting Life Near an Anti-Star

An anti-star is a star that produces energy via antimatter annihilation. As annihilation is 100% efficient at turning matter into energy, an anti-star the mass of the Sun produces 100 times as much ...
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Harvesting Antimatter from Solar Flares

An old NASA news article I came across states that a solar flare observed in 2002 produced around a half-kilo of antimatter: https://www.nasa.gov/vision/universe/solarsystem/rhessi_antimatter.html How ...
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How to annihilate an object completely? [closed]

I would like to annihilate an object (approx size of a table), in that I want to make it not exist in any recognizable form. (gamma radiation, etc. would be fine). My knowledge of physics would fit on ...
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How far would an antimatter asteroid made inside our solar system? [closed]

Imagine right now an antimatter asteroid the size of Hawaii of extraterrestrial origin enters our solar system and is on a collision course with one of the inner planet, Mercury at a fantastic speed ...
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The use of antimatter being a solution to the Fermi Paradox [closed]

While there are many proposed solutions to the Fermi Paradox, one option in particular stood out to me as a likely candidate: antimatter. It's no secret that antimatter is one of the most dangerous ...
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1answer
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How could an antimatter battery take the shaking and knocks from being in an active android? [closed]

There are quite a few questions on here related to using antimatter-matter annihilations as an energy source or weapon and it seems one big issue is the safety issue of it not all going off if damaged....
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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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1answer
188 views

Antimatter filled buckyballs - The energy storage medium of the future

Antimatter gets used a lot in SciFi due to it's mind-bending energy density. If you can store it in a form that requires no power and is at least mildly idiot-proof then you've just solved half of ...
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How long and where could an antimatter object survive in space?

Are there any areas of space where an antimatter object, the size of a small house could survive without coming into contact with any or extremely minimal amounts of matter? I had assumed in all ...
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How fast does an antimatter bullet need to move to pierce rather than explode?

The environment is set in (ideal) space with no air for the bullet to interact with. It should encounter nothing until it reaches its target. The bullet is assumed to be a perfect sphere with a ...
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493 views

Would there be any place for nuclear-powered spaceships in a world where antimatter propulsion is the standard?

Nuclear fission rockets are becoming obsolete and have been superseded by the more efficient antimatter engines, which have nearly 100% efficiency and do not produce pollutants. I'm wondering this: in ...
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Would an antimatter bullet fired from a sniper rifle even reach its target?

Let's say our villain fires an antimatter rifle from behind a magnetic field over a km from the target. The bullet is traveling over 1000 meters per second. If it reaches its target, the 13 gram ...
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1answer
257 views

How much antimatter can we theoretically hold in a Minimum Magnetic Field Trap?

I will be using solar antimatter production via Schwinger pair production like the VARIES project but I need to store it for bulk use. The containment will be a satellite orbiting the sun close enough ...
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What would a life-form be like if it's antimatter-based

I've been thinking of the idea of creating and adding an alien species that's antimatter-based (being from a universe where antimatter became the majority instead of "normal matter"). However, I'm ...
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3answers
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Could anti-matter virtual particles be theoretically harvested from the quantum flux?

I was wondering if a vacuum created within a particular material in the shape of sphere could be used to harvest anti-matter from virtual particles? Within the vacuum, theoretically, virtual ...
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Methods and Feasibility of Antimatter Mining?

Say 200-300 years in the future, humankind has colonized much of the solar system, using a combination of laser thermal drives and solid-core nuclear rockets (fusion never really panned out). ...
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3answers
369 views

Is antimatter boosted nuclear weapon theoretically possible?

Are there any fundamental obstacles to using a nuclear explosion as a trigger for antimatter generation and thus considerably increasing the yield?
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The great battery swap [closed]

An alien contra-organization wants to spur the development of Earth to help humans in the near-future in presence of a prime-directive like law. They cannot establish actual contact, so they do the ...
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3answers
186 views

Antimatter internal combustion engine

I have an idea for an extremely crackpot engine design for a future society I may incorporate into my story. What would happen is individual antihydrogen molecules injected into the center of carbon ...
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1answer
277 views

Feasibility of an Antimatter-Catalysed Ram Augmented Interstellar Rocket (AC-RAIR)

A fictional starship that I am designing functions via a form of Bussard ramjet that uses hydrogen from the interstellar medium as reaction mass, not as fuel. In order to accelerate the propellant, ...
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247 views

How can I destroy a planet with antimatter?

So I found the base of these pesky rebels on this planet and I am tasked with destroying the planet to eliminate the rebels once and for all. Unfortunately, my death star has malfunctioned and has ...
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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 ...
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How would an antimatter reactor actually work?

In the far future, antimatter is used for energy storage: Huge space stations with powerful solar arrays orbit the sun a bit inside Mercury's orbit, using the energy to create small amounts of anti-...
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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 ...
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1answer
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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 ...
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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 ...
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4answers
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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....
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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 ...
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1answer
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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'...
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1answer
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ways: one ...
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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 ...
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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 ...
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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 ...
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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 ...
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4answers
548 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 ...
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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 ...