Questions tagged [supernova]

Use this tag for questions about a supernova: a massive explosion emitting light, heat and radiation that occurs when some stars die.

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How fast would strangelets travel in space?

At what speed would strange matter travel in space after being ejected from a neutron star merger? I have searched around online but I have not found an answer.
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4 votes
2 answers
114 views

Ways to initiate a supernova explosion

Assume we have a star that is sufficiently massive to end its life in a supernova. Also, said star is currently fusing heavy enough elements that, under normal progression, it is within less than 200 ...
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4 votes
1 answer
137 views

What is a safe distance from a stellar nursery and what will it look like from that distance?

I was designing an arrangement of megastructures which would be hidden within a nebula but for those in the know it would be big location pointer and I have gone for a molecular cloud based on the ...
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5 votes
1 answer
101 views

Iron meteors coming directly from a core collapse supernova explosion

I want my world to be bombarded, at a certain point of its history, by a meteor shower of iron meteors. While analyzing the recovered samples of the meteor showers, the local scientists find proof ...
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11 votes
3 answers
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Could a dyson sphere survive a supernova?

So, a civilization built a massive Dyson Sphere around a supergiant star. As the star ages, it begins to fuse iron. At this point, the force of radiation pressure cannot prevent core collapse, and ...
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4 votes
2 answers
201 views

Living on a planet years before a supernova

A planet is orbiting an old star that is on the verge of going supernova. The planet is colonized, so there's no need to worry about the habitability of the planet or evolution of life during the ...
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10 votes
3 answers
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What would happen to a gas giant during a supernova?

Fairly straightforward question. Imagine a gas giant planet, like the size of Jupiter, in orbit around a massive star. The star goes supernova. What happens to the planet? Is the energy of the ...
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6 votes
1 answer
258 views

What are the effects of a nearby supernova on a young solar system?

I'm building a S-Type binary system where the primary star is a black hole. Yet the system formed as a O + K-Spectral class binary and the 20 solar-mass O giant went nova 2,7 myr after both the stars ...
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1 vote
0 answers
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Could you disrupt the gravity of a black hole using quadrillions of supernova explosions? [duplicate]

For context, I’m planning a novel with as much ridiculous magic as ridiculous science so, yes I know, it’s impossible but that's the fun of mixing science and magic in worldbuilding. So the situation ...
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1 vote
1 answer
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Is there a formula for scaling explosive detonation velocity? (Supernova level) [closed]

For context, I’m planning a novel with as much ridiculous magic as ridiculous science so, yes I know, it’s impossible but bear with me. There is a supermassive black hole that weighs 1 trillion solar ...
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14 votes
4 answers
569 views

Navigating storm fronts in space

Storm fronts — especially surprise storm fronts — are a popular Sci-Fi trope. Ion storms and radiation storms and neutronic storms and they invariably look 2D, like ribbons in space. But ...
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11 votes
4 answers
1k views

Can I trigger supernova artificially?

As far as I know stars are going supernova as a natural process. Can aliens trigger it artificially? If this is possible then: How can I do this (what minimum technology and civilization development ...
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3 votes
1 answer
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Is a supernova powerful to destroy the other star in a binary system?

So, you have the big bad race, whose extermination method is basically to force stars to go supercritical via the power of handwavium. You can assume 1 solar mass for each, but you can change it if ...
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3 votes
1 answer
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What happens if there is a supernova in a Tatooine solar system?

I'm 13 and very interested in world building and creation, recently having an idea causing many questions seemingly unanswered by the internet. I am aware that a planet can run an unstable figure of 8 ...
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14 votes
3 answers
599 views

How efficient can my neutrino detector be?

In a class discussion last week, someone pointed out that a typical core collapse supernova releases $\sim10^{46}\text{ J}$ of energy in the form of (anti-)neutrinos while only radiating $\sim10^{44}\...
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1 vote
3 answers
170 views

Few-hours order effect on a solar system if another star was suddenly added?

Context For those interested A Class 3 Kardashev Civilization has sent a small recon fleet (~1 million ships) to lay siege to system. Sometime after arrival, an extraordinarily dangerous entity is ...
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18 votes
7 answers
7k views

What would the signs of the Sun undergoing a supernova be? [duplicate]

If our Sun was to suddenly undergo a supernova, what would the signs be? Would there be any signs we could notice before our death? Assume that the Sun was to gain an increase in handwavium and thus ...
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8 votes
3 answers
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Would ripping the core from a Sun-like star cause it to explode?

I'm well aware that a Sun-like star is incapable of producing a supernova at the end of its life. However, would removing the core or a fraction of it, trigger an explosion from the star collapsing in ...
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88 votes
22 answers
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My star will explode as a supernova. What can I do in order to ensure that my planet survives that?

I am posting this in behalf of a friend of mine from a distant world. Here is his message properly translated to English: Hi, Sol3αlings1. My name is $ѬӚᕕƨ⧬௵44ħ$. We are peacefully and we need your ...
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8 votes
2 answers
880 views

Could a civilization engineer supernovae?

The Eternal Emperor wants to throw a party the likes of which the galaxy has never seen. The billionth anniversary of his reign is fast approaching (a mere hundred thousand years away!). He has ...
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2 votes
2 answers
428 views

What should humans do in a supernova?

In my story where thousands of humans are transported to the planet with dinosaurs that is 400 light years away, there are bound to be lots of warnings on the generation ship. Friendly aliens are ...
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3 votes
4 answers
223 views

Exploding the world as a planetary escape plan

You are an intelligent species whose sun is very near expiring. When your sun expires your world will be engulfed by it. You are evacuating your planet as fast as possible but you don't yet have ...
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6 votes
2 answers
665 views

How much warning would a civilization have that a nearby star was about to go supernova?

I want to have aliens approach the Earth looking for a new world to colonize. They come from a similar planet circling a similar star, but either their star has entered its red giant phase (how long ...
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39 votes
5 answers
9k views

Can a planet survive a supernova?

The Sun has nowhere near enough mass to enter the branch of stellar evolution that would lead to a supernova, fortunately for us. However, there are planets that orbit stars that are destined to go ...
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7 votes
2 answers
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If the sun were to go supernova, how long would Earth have before it was consumed? [closed]

Assuming some magic handwavium caused the sun to go supernova, how long would it take to reach Earth and wipe out the planet? I know it would be eight minutes until the light reached us, but how fast ...
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7 votes
6 answers
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Witnessing the death of a star that would go supernova

Death of stars are fun and make for a great premise, but the actual dying of stars that are conducive to intelligent life aren't so interesting. Stars that can go supernova are too short-lived to ...
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3 votes
2 answers
186 views

How could events triggered by a supernova accelerate the death of a main sequence star?

My story revolves around a star going supernova. The 'Earth' in this story is about 100 light-years or more away (a safe distance, but not too far away). I need this supernova to somehow accelerate ...
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15 votes
7 answers
5k views

How can we extinguish a supernova?

Assuming in a galaxy far far away there is a Type 2 civilization (currently on the verge of making the transition to Type 3). Their scientists predicted that the star (red giant) they are orbiting is ...
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21 votes
3 answers
2k views

What technologies and sciences are needed to detect a star going supernova?

What technology (at minimum), devices or minimum civilization development is needed, so that an individual member of this civilization would be able to detect that some star is going supernova? My ...
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14 votes
2 answers
973 views

How close must a supernova be to severely harm the Earth?

I did a little looking and it appears stars outside of 10 parsec/33 ly will have very little effect on the Earth. What it did say was that inside that range the gamma rays would affect our ozone ...
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