Then, the outer layers will drift to the space and form a planetary nebula. After burning all the hydrogen and helium at its core, Sun will expand and cool and turn into a red giant star. Sun is a normal star and is not massive enough for black hole formation. These type of black holes form when a massive star (at least a few times more massive than the Sun) burn its last remaining fuel and collapse. ![]() Stellar black holes are relatively small but very dense. But let's examine this impossible scenario and learn some fun scientific facts!įirst of all, let's see why Sun will never become a black hole. ![]() Of course Sun will never become a black hole as it's not massive enough to explode as a supernova and turned into a black hole. Keep in mind that most of this can be prevented if your civilization is sufficiently advanced.What would happen if the Sun suddenly turn into a black hole? Will the black hole swallow all the planets and Solar System reach to its end? Unless you use magic to avoid these implications, society would collapse and a large amount of people will die off. If there was a way to survive this, all the people would retreat underground for warmth and light (I don't know whether magma would be sufficient for this, correct me), and have to rely on radically different food sources. The sun is our only source of natural light, apart from magma if you go deep enough (maybe?). Unless you have enough artificial lighting (which even modern-day Earth lacks), everyone would just go blind or have to rely on torches / candles etc. U/Reedstilt points out the factor of crops not growing very well, but wouldn't the first concern be the freeze that would come after the sun is switched off? Greenhouse effect could protect you for a while (plus the 8 minutes of sunlight you'll get after the event) but eventually you'll have to search for an alternate source of heat.Īlso, when the sun dies, another major concern would be a source of light. These are just opinions and conclusions I came to with logic - knowing all the relevant facts could greatly change the answer.) (Disclaimer: I'm not an expert in the field nor have I researched this scenario particularly well so take what I say with a grain of salt. As this happens the world would slowly be cooling but not as quickly as with a black hole. The light changes to a harsh blue light but over a suitable timescale for your story as it cools it becomes white, yellow, orange and finally red. ![]() However, you could brush aside the exact details and say that the Sun god shrinks to the size of star in the sky. In astronomical terms when a white dwarf is born they are extremely hot and the resulting illumination (including lots of ultraviolet and x-rays) would render Earth uninhabitable. The sun would shrink to about the same size as Earth so it would only appear as a bright star in the sky. This is a star that no longer burns fuel but is instead slowly (on astronomical timescales) cooling. Perhaps an alternative is to convert the sun god into a white dwarf instead. ![]() Earth would go dark then everything would freeze and die. In the absence of a surrounding accretion disc it wouldn't even be an interesting sight in the sky unfortunately. If Earth's sun suddenly changed into a black hole it would shrink from a radius of just under 700,000 km to around 3 km.
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