How long do supernova remnants last?
Technically, forever.
Super nova remnants make up our planet and the entire solar system. Stars are formed from hot balls of hydrogen undergoing nuclear fusion. When a star burns through all of its hydrogen and then all of its helium, its outer layers begin to collapse inward due to gravity. As they do so, helium atoms fuse to form heavier elements until they reach iron, at which point the fusion process ends.
The last event is an explosion, at which point all the elements the star created are flung out into the universe to be captured by newly forming stars, and that is how we came by all our elements. However, star giants have so much mass that their collapse continues past iron and can continue all the way through radon. That covers all the natural elements in the universe.
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Thousands to tens of thousands of years can pass between supernova remnants and their parent star, depending on the size and density of the interstellar medium.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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