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Questions tagged [fusion]

For questions about nuclear fusion in general.

6
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3answers
402 views

Practicality Of Orbital Fusion Reactors for Power

Much of the struggle with terrestrial fusion power seems to be with keeping the ultra-hot plasma contained. In a classic Tokamak configuration, magnets using massive amounts of power, suspend the ...
4
votes
4answers
139 views

Is fusion a viable power source for a bio-mechanical entity?

My alien civilization is entering the space age, and have reached the point where they will be sending ships hundreds of light-years away. Instead of generation ships, my civilization is building bio-...
15
votes
3answers
487 views

Could the Sun be born again?

About 5 billion years from now, the Sun will begin to swell into a red giant. This will cause some problems, because life on a planet orbiting a red giant is hard. Even if Earth isn't engulfed by the ...
9
votes
2answers
120 views

Can a fission satellite duplicate the radiance frequencies of a star?

I sometimes think about the arrogant dwarf starsmiths in the question. How to blow up a star by accident? I pose the question in the voice of the dwarf, probably because I am hungry for down votes. ...
23
votes
11answers
7k views

Why would Fission be used in a world where Fusion reactors exist?

In my world, all terrestrial bodies in the solar-system of over 900 km size have a significant human presence. Earth-moon Travel is as common as an interstate road trip, and Interplanetary travel is ...
9
votes
5answers
348 views

Capital space ships: Several large fusion reactors vs many smaller ones

A group of ships I've made are supposed to be modular in design with each modular hull segment being self sustainable both in terms of power needs and crew upkeep (oxygen, food, water, etc.) I've ...
12
votes
7answers
3k views

Fusion: Using a lens to focus the energy of a star

Is it possible to focus the energy of one star to a small enough point and high enough energy to provide the energy to start a fusion reactor? I'm imagining a large lens placed between the star and ...
2
votes
1answer
173 views

Two-stage fusion propulsion [closed]

I am currently developing an interstellar mission layout for a science project and am starting the propulsion selection process. The main criterion of my mission is that it must be feasible with the ...
21
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10answers
4k views

Refueling from stars

My galaxy exploring ship is powered by a fusion reactor (back up with some solar panels but they spend a long time between stars). We know that stars are powered by fusion too, so they have all the ...
1
vote
4answers
226 views

Making fusion reactors better with nanotech [closed]

After finding the energy harvesting page of Wikipedia, one side of the S2 engine was covered This was the "vegetative" side. Now we have the active side, that gets more energy under shorter time, I ...
11
votes
6answers
942 views

What does a small fusion reaction sound like?

I am familar with current reactor (experimental) fusion reactor design. But imagine a fusion reaction happening without a reactor, so there is no reactor hull to shield the sound from an innocent ...
1
vote
2answers
146 views

Setting the scene - Alien Mineral, Mass Infertility

I'm amidst crafting a world but not sure how to fill in a few gaps. Your suggestions and ideas would be greatly appreciated! I've got a scenario where an extraterrestrial meteor hits planet earth. It ...
1
vote
3answers
156 views

Nano robots and unlimited energy based era of abundance, how would it change society? [closed]

I believe that the combination of those two futuristic technology described below would allow us to live in an utopian world where scarcity is a thing of the past. I m really wondering how it would ...