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a happens when a single high mass star explodes

The technology has become so powerful that scientists predict they will detect the weak neutrino signals that come out days before the explosion; as a kind of supernova forecast, it will give astronomers a heads-up to catch the first light of a supernova. The massive star closest to us, Spica (in the constellation of Virgo), is about 260 light-years away, probably a safe distance, even if it were to explode as a supernova in the near future.In this section, you were introduced to some very dense objects.

If the mass of a star’s iron core exceeds the Chandrasekhar limit (but is less than 3 As is true for electrons, it turns out that the neutrons strongly resist being in the same place and moving in the same way.

Because these heavy elements ejected by supernovae are critical for the formation of planets and the origin of life, it’s fair to say that without mass loss from supernovae and planetary nebulae, neither the authors nor the readers of this book would exist.But the supernova explosion has one more creative contribution to make, one we alluded to in When supernovae explode, these elements (as well as the ones the star made during more stable times) are ejected into the existing gas between the stars and mixed with it.

Up to this point, each fusion reaction has You might think of the situation like this: all smaller nuclei want to “grow up” to be like iron, and they are willing to pay (Unable to generate energy, the star now faces catastrophe.When nuclear reactions stop, the core of a massive star is supported by degenerate electrons, just as a white dwarf is. The shock wave from the supernova can initiate star formation in other interstellar clouds. 75. [latex]g\left(\text{white dwarf}\right)=\frac{\left(G\times 2{M}_{\text{Sun}}\right)}{{\left(0.5{R}_{\text{Earth}}\right)}^{2}}=\frac{\left(6.67\times {10}^{-11}{\text{m}}^{2}{\text{/kg s}}^{2}\times 4\times {10}^{30}\text{kg}\right)}{{\left(3.2\times {10}^{6}\right)}^{2}}=2.61\times {10}^{7}{\text{m/s}}^{2}[/latex]In a massive star, hydrogen fusion in the core is followed by several other fusion reactions involving heavier elements. It's also one of the only ways to directly extract information from a star's core—similar to an X-ray image of your body, except it's for Although there is a general understanding of how a massive star evolves and explodes, scientists are still uncertain about the lead-up to the supernova explosion. We do not guarantee individual replies due to extremely high volume of correspondence. This study lays out the first steps of how to interpret the data. Type I supernova C. Type II supernova D. Pulsar E. None of the above. For stars that begin their evolution with masses of at least 10 While no energy is being generated within the white dwarf core of the star, fusion still occurs in the shells that surround the core. A larger star with more mass will go on making nuclear reactions, getting hotter and expanding until it explodes as a supernova. This document is subject to copyright. Get weekly and/or daily updates delivered to your inbox. You can unsubscribe at any time and we'll never share your details to third parties.

An exploding supernova throws hot gas into space. Thus, supernovae play a crucial role in enriching their galaxy with heavier elements, allowing, among other things, the chemical elements that make up earthlike planets and the building blocks of life to become more common as time goes on (Figure 3).Supernovae are also thought to be the source of many of the high-energy But supernovae also have a dark side.

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